3,080,000 Shares of Common Stock
1,540,000 Redeemable Class A Warrants
1,540,000 Redeemable Class B Warrants

This prospectus covers the sale of up to:

• 2,800,000 shares of our common stock issuable upon the exercise of redeemable warrants issued in a public offering conducted by us in May 2010,
• 280,000 shares of our common stock, 140,000 redeemable Class A warrants and 140,000 redeemable Class B warrants issuable upon the exercise of outstanding representative's warrants issued by us in connection with our May 2010 initial public offering; and
• 280,000 shares of our common stock issuable upon the exercise of the redeemable Class A warrants and Class B warrants underlying representative's warrants.

In May 2010, we completed a public offering of 1,400,000 units, each consisting of two shares of our common stock one redeemable Class A warrant and one redeemable Class B warrant. Unless earlier redeemed, the Class A warrants and the Class B warrants are exercisable at $7.15 per share and $11.00 per share, respectively, at any time on or before May 3, 2015. The Class A warrants are redeemable upon 30 days' prior written notice at a price of $0.25 per warrant at any time after our common stock has closed at a price at least equal to $8.80 for at least five consecutive trading day. The Class B warrants are redeemable on the same terms, provided our common stock has closed at a price at least equal to $13.75 for five consecutive trading days.

The representative's warrants were issued by us in connection with our May 2010 initial public offering. Holders of the representative's warrants may purchase up to an aggregate of 140,000 units, each unit consisting of two shares of our common stock, one Class A warrant and one Class B warrant. The representative's warrants are exercisable at $13.20 per unit and expire on May 3, 2015.

If all of the outstanding representative's warrants and redeemable warrants (including those underlying the outstanding representative's warrants) listed above are exercised, we would receive gross proceeds of up to $29,799,000 (including the exercise of 140,000 representative's warrants) before deducting expenses of the offering, including a warrant solicitation fee of up to 5% of the gross proceeds and other offering expenses of approximately $15,000.

Our common stock, Class A warrants and Class B warrants are traded on the Nasdaq Capital Market under the symbols "SANW," "SANWW" and "SANWZ," respectively. On January 11, 2012, the last reported sale prices of our common stock, redeemable Class A warrants and redeemable Class B warrants on the Nasdaq Capital Market were $4.69, $0.65 and $0.25, respectively.

TABLE OF CONTENTS

SPECIAL NOTE REGARDING FORWARD LOOKING STATEMENTS

We own a seed cleaning and processing facility in Five Points, California that we constructed and have operated since 1980. Our facility was extensively modernized and rebuilt in the late 1980's. The property encompasses a total of 40 acres, including 35 acres that are in reserve for future development and five acres on which are situated permanent structures and three seed processing lines. We believe that the replacement cost of our Five Points facility would be at least $12 million. The facility has been operating at less than 25% of capacity, providing ample opportunity for growth. We recently have begun capitalizing on our facility's central location in the San Joaquin Valley by more aggressively marketing our seed cleaning and processing services to other growers of alfalfa seed, as well as growers of small grains such as wheat, barley and triticale, which are processed at different times of the year than alfalfa seed.

We incurred a net loss of $811,448 for the fiscal year ended June 30, 2011 and earned net income of $522,765 for the fiscal quarter ended September 30, 2011.

Founded in 1980 and headquartered in the Central Valley of California, we are a leading producer of warm climate, high-yield alfalfa seed varieties, including varieties that can thrive in poor, saline soils.

Our alfalfa seed business consists of breeding our proprietary alfalfa seed varieties, primarily with San Joaquin Valley farmers, for the production of that seed, cleaning, processing and bagging the seed at our facility and marketing and selling it as certified seed to agribusiness firms and farmers throughout the world. We contract annually at fixed prices with growers who have established a history of yields that provide some predictability into anticipated supply volume and cost. Nevertheless, yields are subject to agriculture risk and the farming practices of each grower. Our principal business is subject to uncertainty, caused by the following factors, among others: (i) our growers may decide to grow different crops when prices for alternative commodities are on the rise, which can create a shortage of our certified seed; (ii) farmers who typically purchase our seed to grow alfalfa hay may plant alternative crops either in reaction to a decline in the dairy industry, which in turn causes shrinking demand for alfalfa hay or because they can make a higher profit planting alternative crops, either way, with the result that smaller quantities of our seed are purchased, or (iii) farmers may choose to convert their hay crops to non-certified common seed, and an overabundance of non-certified seed entering the market can drive down the overall market price for alfalfa seed, including the market for certified alfalfa seed. Consequently our revenue and margins can be difficult to project.

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In connection with our alfalfa seed operations since our May 2010 IPO, we have (i) expanded our sales and marketing efforts; (ii) leased approximately 800 acres in Kern County in California's San Joaquin Valley, on which we are producing a portion of our alfalfa seed supply ourselves as well as other crops; and (iii) purchased the customer list of our principal international distributor from its owner in order to begin direct international sales rather than relying upon distributors for sales of our alfalfa seed in Saudi Arabia, and to other Middle Eastern and North African countries such as Sudan, Egypt and Morocco. We began direct international sales in June 2011. Our first crop of internally produced alfalfa seed was planted in the second fiscal quarter of 2012 and will be harvested, cleaned, bagged and made available for sale to our customers in the first and second quarters of 2013, along with the seed we purchase from our growers. We believe that by vertically integrating our alfalfa seed business to include our own production, we can leverage our existing management infrastructure, experienced agronomics team and milling capacity, while reducing our costs and more directly controlling our inventory.

In fiscal 2010, we launched a business expansion initiative centered on our plan to commercially produce stevia leaf in the U.S. in response to growing global demand from the food and beverage industry for the all-natural, zero calorie sweetener. In fiscal 2010, we laid the groundwork for the commercial production of stevia in California's Central Valley by conducting trials on sample stevia material sourced from stevia plant breeders in India, China and Paraguay. We planted our first small-scale commercial crop of stevia in May and June 2011 and harvested the first crop during the first quarter of fiscal 2012. With no history of stevia operations, we cannot guarantee that our stevia production operations will prove profitable, but we anticipate that we will earn our first stevia-generated revenues in fiscal 2012.

Our first commercial crop was planted and harvested by us. In future years, we may contract with other growers but have made no specific plans in this regard.

After harvest, we will process the stevia, which will primarily involve separating the leaves from the stems, drying the leaves and packaging them, and will then market and sell the dried stevia leaf to companies that process it for its derivatives (primarily Reb-A) for incorporation into food and beverages. We used the first commercial harvest primarily to experiment with various equipment and harvesting methodologies in order to determine the best and most cost-effective means to harvest future stevia crops.

In July 2010, we entered into a five-year supply agreement with a major stevia processor that has agreed to purchase our production of stevia that is grown from plants sourced through that company or its agents, up to certain maximum amounts. Our goal is to select or breed varieties that produce the highest Reb A content stevia under our local growing conditions, which we believe will be desired by our future customers. The supply agreement does set certain minimum specifications for Reb-A content and other factors, and our stevia cultivation program has focused on developing varieties that meet the stated requirements.

In addition to processing seed for our alfalfa seed business, we also provide cleaning and processing services for other growers' alfalfa seed, as well as safflower and cotton seed and small grains, such as barley and wheat. Our mill currently operates at less than 25% of capacity, leaving capacity available for expansion of milling services without the need to make any significant capital outlay. In fiscal 2011, we began to focus on making this a more significant portion of our business, and as a result, milling services increased over 55% from fiscal 2010 to fiscal 2011.

Our principal business office is located at 25552 South Butte Avenue, Five Points, CA 93624, and our telephone number (559) 884-2535. Our website address is www.swseedco.com. Information contained on our website or any other website does not constitute part of this prospectus.

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The Offering

We are offering the following securities for sale by us upon exercise of outstanding Class A warrants, Class B warrants and the representative's warrants:

This prospectus also covers 140,000 Class A warrants and 140,000 Class B warrants issuable upon exercise of the representative's warrants issued by us in connection with our initial public offering. The holders of the representatives warrants may purchase up to an aggregate of 140,000 units, each unit consisting of two shares of our common stock, one Class A warrant and one Class B warrant. The representative's warrants are exercisable at $13.20 per unit and expire on May 3, 2015.

We had 5,800,000 shares of common stock issued and outstanding as of January 11, 2012. Unless the context indicates otherwise, all share and per share common stock information in this prospectus:

• assumes no exercise of the Class A and Class B warrants;

• assumes no exercise of the representative's warrants;

• excludes 677,000 shares underlying outstanding options under our 2009 Equity Incentive Plan; and

• excludes 73,000 shares reserved for issuance pursuant to future grants under our 2009 Equity Incentive Plan.

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Market prices for our alfalfa seed can be impacted by factors such as the quality of the seed and the available supply, including whether lesser quality, uncertified seed is available. Growing conditions, particularly weather conditions such as windstorms, floods, droughts and freezes, as well as diseases and pests, are primary factors influencing the quality of the seed and therefore, the market price at which we can sell our seed to our customers. A decrease in the prices received for our products could have a material adverse effect on our business, results of operations and financial condition.

We rely on unaffiliated growers to grow our proprietary seed and to sell it to us at negotiated prices each year. Growers have a choice of what crops to plant. If a particular crop is paying a materially higher price than has been paid in the past, growers may decide to not grow alfalfa seed in favor of receiving a higher return from an alternative crop planted on the same acreage. Some of our growers who have grown alfalfa seed for us for many years did not grow seed for us in fiscal 2011 in order to make acreage available to plant cotton and reap a portion of the historically high prices being paid for that crop in 2011. If our growers decline to a significant degree to plant the acreage on which we rely, and if we cannot find other growers to plant the lost acreage, our inventory of seed could be insufficient to satisfy the needs of our customers, and our business, results of operations and financial condition could materially decline. In addition, our customers could look to other suppliers for their seed, and we may have not be able to get them to return as customers once our inventory levels have returned to normal.

Alfalfa seed, our primary product, is vulnerable to adverse weather conditions, including windstorms, floods, drought and temperature extremes, which are quite common but difficult to predict. In addition, alfalfa seed is vulnerable to crop disease and to pests, which may vary in severity and effect, depending on the stage of production at the time of infection or infestation, the type of treatment applied and climatic conditions. Unfavorable growing conditions can reduce both crop size and quality. While historically, we have not grown the

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alfalfa seed we sell, these factors can nevertheless directly impact us by decreasing the quality and yields of our seed, reducing our inventory and supply of seed we sell to our customers, increasing our costs and decreasing revenue and gross margins, which may have a material adverse effect on our business, results of operations and financial condition. Moreover, beginning in fiscal 2012, we expect to directly grow a small portion of our alfalfa seed and therefore, the adverse effect of weather and pests could impact us directly in future periods.

We expect that the majority of our revenues will continue to be generated from our alfalfa seed business, even though we have recently entered the commercial stevia growing business. Our alfalfa seed business is highly seasonal. The seasonal nature of our operations results in significant fluctuations in our working capital during the growing and selling cycles. As a result, operating activities during the second and third fiscal quarters use significant amounts of cash because we typically pay our growers progressively, starting in the second quarter. In contrast, operating activities for the first and second fiscal quarters typically generate cash as we ship inventory and collect accounts receivable. We have experienced, and expect to continue to experience, significant variability in net sales, operating cash flows and net income on a quarterly basis.

Historically, we have relied upon a small group of customers for a large percentage of our net sales, including Genetics International, which served the Saudi Arabian market. We expect that a small number of customers will continue to account for a substantial portion of our net sales for the foreseeable future. Fiscal 2011 was a year in which we experienced significant changes in sales concentration because Genetics International was severely negatively impacted by market factors in the Saudi Arabian seed market, resulting in it purchasing a far smaller quantity of seed than it had purchased in recent years. Genetics International has left the alfalfa seed business, and since June 2011, we have been selling directly to its former customers. One of those customers, Sorouh Agricultural Company represented approximately 20% of our net sales in fiscal 2011, and we expect that that customer, together with S.C.A.L.E Ag Services, a domestic distributor, will represent a material amount of our sales in fiscal 2012.

We do not have written contracts with either of these or any other of our customers. The loss of, or a significant adverse change in, our relationship with these customers, or any other major customer, could have a material adverse effect on our business, financial position, results of operations and operating cash flows. The loss of, or a reduction in orders from any significant customers, losses arising from customers' disputes regarding shipments, product quality, or related matters, or our inability to collect accounts receivable from any major customer could have a material adverse effect on us. There is no assurance that we will be able to maintain the relationships with our major customers or that they will continue to purchase our seed in the quantities that we expect and rely upon. If we cannot do so, our results of operations could suffer.

Historically, we have relied on a relatively small network of growers of alfalfa seed that together have provided all of the seed we sell to our customers. Although beginning in fiscal 2012, we expect to grow a portion of our own seed, most of our seed will continue to be grown under annual contracts with farmers in the San Joaquin Valley. Three growers collectively accounted for approximately 51% of our total seed purchases in fiscal 2011. Many of our growers have had long-term grower relationships with us. However, we do not have long-term

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supply contracts with any of these growers, which makes us particularly vulnerable to factors beyond our control. Events such as a shift in pricing caused by an increase in the value of commodity crops other than seed crops, increase in land prices or competition could disrupt our chain of supply. Any of these disruptions could limit the supply of seed that we obtain in any given year, adversely affecting supply and thereby lowering revenues in the subsequent marketing season. Such disruption could also damage our distributor relationships and rancher and farmer loyalty to us if we cannot supply the quantity of seed expected by them. We encountered a meaningful shift in our grower network in fiscal 2011, with some of our growers who had grown for us for many years opting to cut back their alfalfa seed acreage or to not grow alfalfa seed at all. This situation could reoccur and could negatively impact our revenues if we do not otherwise have sufficient seed inventory available for sale.

Adequate quantities and correct timing of the application of water are vital for most agriculture to thrive. Whether particular farms are experiencing water shortages depends, in large part, on their location. However, continuing drought conditions can threaten all farmland other than those properties with their own water sources. Although alfalfa seed is not a water-intensive crop, the availability or the cost of water is a factor in the planting of the alfalfa hay grown from our seed. If the dairy farmers and others who purchase our alfalfa seed to grow hay cannot get an adequate supply of water, or if the cost of water makes it uneconomical for the farmers to grow alfalfa, we may not be able to sell our seed, which could have an adverse impact on our results of operations. We cannot predict if water shortages will impact our business in the future, but if alfalfa hay growers are impacted by water shortages, our business could also materially decline.

In addition, if the government of the Kingdom of Saudi Arabia were to restrict the availability of water to farmers and other growers, this governmental decision could adversely affect the amount of seed we would be able to sell in the Middle East, which currently is our largest market. Were this to occur, our results of operations could be severely impacted for at least the duration of the water shortage.

The alfalfa seed market is highly competitive, and our products face competition from a number of small seed companies, as well as large agricultural and biotechnology companies. We compete primarily on the basis of consistency of product quality, product availability, customer service and price. Many of our competitors are, or are affiliated with, large diversified companies that have substantially greater marketing or financial resources than we have. These resources give our competitors greater operating flexibility that, in certain cases, may permit them to respond better or more quickly to changes in the industry or to introduce new products more quickly and with greater marketing support. Increased competition could result in lower profit margins, substantial pricing pressure, reduced market share and lower operating cash flows. Price competition, together with other forms of competition, could have a material adverse effect on our business, financial position, results of operations and operating cash flows.

We sell our seed primarily to dealers and distributors who, in turn, sell primarily to hay and dairy farmers who grow hay for dairy cattle and other livestock. Due to the nature of the alfalfa seed industry, we normally produce seed according to our production plan before we sell and deliver seed to distributors and dealers. Our dealers and distributors generally make purchasing decisions for our products based on market prices, economic and weather conditions and other factors that we and our dealers and distributors may not be able to anticipate

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accurately in advance. If we fail to accurately estimate the volume and types of products sought by the end users and otherwise adequately manage production amounts, we may produce more seed than our dealers and distributors want, resulting in reduced gross margins and excess inventory investment. On the other hand, if we underestimate demand, which has happened in the past, we may not be able to satisfy our dealers and distributors' demand for alfalfa seed, and thus damage our customer relations and end-user loyalty. Our failure to estimate end users' future needs and to match our production to the demand of our dealers, distributors and farmers to whom we sell seed directly may adversely affect our business, financial condition and results of operations.

Historically, sales of our alfalfa seed in international markets have been made by U.S. distributors having a presence in various international markets. In the last quarter of fiscal 2011, our largest international distributor closed its alfalfa seed business. With the cooperation of the former distributor, we began selling directly to its customers in June 2011. We have never sold directly into Saudi Arabia, Sudan, South Africa, Morocco and Argentina, and we have no direct experience selling alfalfa seed or otherwise doing business in these markets. There is no assurance that we will be able to retain the customers that have purchased our seed from our distributor in the past or that these customers will continue to purchase the quantities of our proprietary seed that they have historically purchased from our distributor. Moreover, one of the Saudi Arabian customers is expected to be one of our largest customers in fiscal 2012, so it is critical that we are successful in maintaining that relationship or our business will materially suffer. We also may not succeed in expanding the customer base in these locations. Failure to sell significant quantities of alfalfa seed to these customers or to new customers in these countries could have a material adverse effect on our financial condition and results of operations.

Beginning in the fourth quarter of fiscal 2011, we started to sell seed directly to a customer in Saudi Arabia who previously had purchased our seed through our international distributor. That customer purchased on credit a significant amount of seed in the first quarter of fiscal 2012. We anticipate that in future periods, this customer could again order significant quantities of seed on credit that could represent, at any one time, a large percentage of our accounts receivable. Because this customer is located in Saudi Arabia, collection efforts, were they to become necessary, could be much more difficult and expensive. Moreover, future political and/or economic factors, as well as future unanticipated trade regulations, could negatively impact our ability to timely collect outstanding receivables from this important customer. Our failure to do so could have a material adverse effect on our results of operations and cash flows.

Our largest customer in fiscal 2011 was Sorouh Agricultural Company, which accounted for approximately 20% of our annual revenue. All of the sales to Sorouh were made in June 2011, when we began direct sales to Saudi Arabia, following the closure of our international distributor's business. Although payment terms for our seed sales generally are 90 days, we extended credit to this customer in fiscal 2011, and at June 30, 2011, the receivable totaled $712,600. We expect that sales of our alfalfa seed varieties to Sorouh will represent a material portion of our revenue in fiscal 2012 and that we will continue to extend credit in connection with those sales. In addition, we expect that S.C.A.L.E. Ag Services, a domestic distributor, will also account for a material portion of our alfalfa seed revenue in fiscal 2012 and that we will extend credit to this distributor. The extension of credit to our major customers exposes us to the risk that our seed will be delivered but that we may not receive all or a portion of the payment therefor. If either of these customers were unable or unwilling to fully pay for the seed they purchase on credit, our results of operations and financial condition could be materially negatively impacted. Moreover, our internal forecasts on which we make business decisions throughout the year could be

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severely compromised, which could, in turn, mean that we spend capital for operations, investment or otherwise that we would not have spent had we been aware that the customer would not honor its credit extension obligation.

We currently operate mainly in the alfalfa seed business, and we do not expect this to change materially in the foreseeable future, even as we begin our commercial stevia business. Without business line diversity, we will not be able to spread the risk of our operations. Therefore, our business opportunities, revenue and income could be more immediately and directly affected by disruptions from such things as drought and disease or widespread problems affecting the alfalfa industry, payment disruptions and customer rejection of our varieties of alfalfa seed. If there is a disruption as described above, our revenue and income will be reduced, and our business operations may have to be scaled back.

We cannot guarantee that the performance of our new alfalfa seed varieties will meet our customers' expectations, or that we will be able to introduce and commercialize specific seed varieties. Reorder rates are uncertain due to several factors, many of which are beyond our control. These include changing customer preferences, which could be further complicated by the new availability of Roundup Ready alfalfa, competitive price pressures, our failure to develop new products to meet the evolving demands of the end users, the development of higher-demand products by our competitors and general economic conditions. The process for new products to gain market recognition and acceptance is long and has uncertainties. If we fail to introduce and commercialize a new seed variety that meets the demand of the end user, if our competitors develop products that are favored by the end users, or if we are unable to produce our existing products in sufficient quantities, our growth prospects may be materially and adversely affected, and our revenue may decline. In addition, sales of our new products could replace sales of some of our current similar products, offsetting the benefit of even a successful product introduction.

In December 2010, the U.S. Department of Agriculture ("USDA") published the final environmental impact statement on Roundup Ready Alfalfa ("RRA"). Following that publication, in late January 2011, the USDA announced the deregulation of RRA, without imposing any regulations, providing any guidance pertaining to field separation or mandating any other conditions. We believe that Forage Genetics, a co-developer of RRA, and other licensed seed companies, have a substantial supply of RRA in inventory that has been awaiting this decision, and that RRA was available for the spring 2011 planting season. This development potentially could adversely impact our sales. Domestically, hay farmers may choose the GMO alfalfa seed over our seed in order to control weeds with Roundup, Monsanto's powerful herbicide. Internationally, we may face a challenge to demonstrate to our customers and end users that our seed is free of any cross-contamination between GMO and organic and conventionally-farmed fields since GMO crops currently are prohibited in most of the international markets in which our proprietary seed is currently sold. If it were determined that our fields or those of our growers, were contaminated with any GMO material, we would be unable to sell seed from those fields in Saudi Arabia, our largest market, because the Kingdom has an absolute prohibition on GMO products. There are other countries that also ban GMO products, so cross-contamination could impact our growth into other markets. No decision has been made whether it is in our best interest to enter the GMO alfalfa market, and no timetable for such a decision has been fixed. In the intervening time period, our domestic sales could be negatively impacted, although the actual impact on the alfalfa seed market in general and on sales of our proprietary seed, in particular, is currently unknown.

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We have just planted our first commercial crop of stevia, and the business continues to be subject to many of the risks of a new business enterprise.

In fiscal 2010, we began expanding our business to include the breeding, selection and planting of high quality stevia varieties for production and processing of the stevia extract, Rebaudioside A ("Reb-A"). We planted our first commercial crop of stevia in fiscal 2011, with the initial harvest expected in the first quarter of fiscal 2012. We have never bred or selected stevia varieties or planted and harvested stevia for commercial purposes. Therefore, we face numerous uncertainties, including the possibility that the stevia seedlings planted during the initial commercial planting may not grow as anticipated, the stevia varieties we select for production may not produce the results we expect; our community of farmers may not be interested in growing stevia; or we may be unable to satisfactorily contract with customers for our dried stevia product. The failure to build a successful stevia business could materially impact our growth potential and could consume company resources that otherwise could be deployed to further the growth of other aspects of our business.

There are a number of challenges to market acceptance of stevia as a natural, non-caloric sweetener. Stevia has its own unique flavor, which can affect the taste of some foods and beverages. Other factors that could impact market acceptance include the price structure compared to other sugar substitutes and availability. If the high intensity, non-caloric sweetener market declines or if stevia fails to achieve substantially greater market acceptance than it currently enjoys, we will not be able to grow our revenue sufficiently for us to achieve consistent profitability from this portion of our business. Even if products conform to applicable safety and quality standards, sales could be adversely affected if consumers in target markets lose confidence in the safety, efficacy and quality of stevia. Adverse publicity about stevia or stevia-based products may discourage consumers from buying products that contain stevia. Any of these developments could adversely impact the amount of processed stevia leaves or extract we are able to sell, which could adversely impact our results of operations.

Historically, stevia has been marketed and sold in the U.S. as a dietary supplement, available in natural food and health food stores. Since December 2008, stevia producers have increased production capacity in expectation of a large demand for stevia products. We started our stevia operation because we expect that demand for stevia will increase significantly in the future, particularly since Reb-A, a stevia extract, has received GRAS (meaning generally accepted as safe) status in the U.S. That determination by the FDA allows Reb-A to be used as a food and beverage additive. However, there can be no assurance that there will be widespread demand for stevia products. If demand for stevia does not increase to the extent predicted by the industry, the stevia market may be subject to significant excess capacity, which would put downward pressure on the market price of stevia and negatively impact our expectations with respect to stevia as a revenue source.

The continued growth of stevia's share of the global sweetener market depends upon consumer acceptance of stevia and stevia-related products and the health implications of consuming stevia relative to other sweetener products. The publication of any studies or revelation of other information that has negative implications regarding the health impacts of consuming stevia may slow or reverse the growth in consumer acceptance of stevia, which may have a material adverse effect on our business operations and financial condition.

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There are difficulties in managing our storage system, which may result in damage to our products held in storage.

Alfalfa seed storage, particularly outside the U.S., entails significant risks, including difficulties in the management of moisture, temperature and humidity. In addition, stevia can lose all viability unless stored in a controlled, refrigerated environment. Any material storage problem may result in damage to our seed or dried stevia leaf and, thus, could create operating losses.

We must acquire sufficient alfalfa seed to meet the demands of our customers. An alfalfa seed shortage could result in loss of sales and damage to our reputation. Because our proprietary seed is only available from our growers, if our growers become unable or unwilling to produce the required commercial quantities of alfalfa seed on a timely basis and at commercially reasonable prices, we will likely be unable to meet customer demand. The failure to satisfy our customers not only could adversely impact our financial results but could irreparably harm our reputation. Although we are just entering the commercial stevia production business, we know we will encounter similar risks if we are unable to satisfy our customers' requirements for dried stevia due to our inability to obtain sufficient quantities of plants, either by growing stevia ourselves or acquiring stevia under contract from growers, or are unable to timely process the stevia to satisfy our customers' needs. In addition, we currently have only a small quantity of acreage allocated to growing stevia plants, and there is no assurance that growers in the San Joaquin Valley will decide in future growing seasons that growing stevia is the best use for their land. If we are unable to contract for a sufficient amount of acreage to grow stevia, we may not be able to capitalize on what we currently believe could be a meaningful growth opportunity.

The loss of any of our current executives, key employees or key advisors, or the failure to attract, integrate, motivate and retain additional key employees, could have a material adverse effect on our business. Other than an employment agreement with our Chief Executive Officer, Mark S. Grewal, which expires in January 2013, we have no employment agreements with our key management personnel. We also do not carry "key person" insurance on the lives of any of our management team. As we develop additional capabilities, we may require more skilled personnel who must be highly skilled and have a sound understanding of our industry, business or processing requirements. Recruiting skilled personnel is highly competitive. Although to date we have been successful in recruiting and retaining qualified personnel, there can be no assurance that we will continue to attract and retain the personnel needed for our business. The failure to attract or retain qualified personnel could have a material adverse effect on our business.

We expect our operations to grow rapidly in the near future, both as we expand our historical business by implementing new sales and marketing activities both domestically and internationally, expanding our mill utilization and increasing our growers' production, and as we develop and expand our stevia production and sales business. These efforts will require the addition of employees, expansion of facilities and greater oversight. If we are unable to manage our growth effectively, we may not be able to take advantage of market opportunities, execute our business strategies or respond to competitive pressures, and we may have difficulties maintaining and updating the internal procedures and the controls necessary to meet the planned expansion of our overall business.

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Our management will also be required to maintain and expand our relationships with customers, suppliers and third parties as well as attract new customers and suppliers. We expect that our sales and marketing costs will increase as we grow our product lines and as we increase our sales efforts in new and existing markets.

There is no assurance that our current and planned operations, personnel, systems and internal procedures and controls will be adequate to support our future growth. We expect that our general and administrative costs will increase as our operations grow to meet existing sales orders for our products and for future growth as we increase our sales efforts in new and existing markets.

Other than in fiscal 2011, which we believe was an abnormal year, historically sales to our distributors who sell our proprietary alfalfa seed varieties outside the U.S. have constituted a substantial portion of our annual revenue. We anticipate that sales into international markets will continue to represent a substantial portion of our total sales and that continued growth and profitability will require further international expansion, particularly in Saudi Arabia and North Africa. Our financial results could be affected by changes in trade, monetary and fiscal policies, laws and regulations, or other activities of U.S. and non-U.S. governments, agencies and similar organizations. These conditions include but are not limited to changes in a country's or region's economic or political conditions, trade regulations affecting production, pricing and marketing of products, local labor conditions and regulations, reduced protection of intellectual property rights in some countries, changes in the regulatory or legal environment, burdensome taxes and tariffs and other trade barriers. International risks and uncertainties, including changing social and economic conditions as well as terrorism, political hostilities and war, could lead to reduced distribution of our products into international markets and reduced profitability associated with such sales.

Defective seed could result in warranty claims and negative publicity. Although we carry general liability insurance to cover warranty claims, such coverage may become unavailable or be inadequate. Even if coverage is offered, it may be at a price and on terms not acceptable to us. If claims exceed coverage limits, or if insurance is not available to us, the occurrence of significant claims could have a material adverse effect on our business, results of operations and financial condition.

We may be subject to legal proceedings and claims from time to time relating to our seed or dried stevia leaf quality. The defense of these proceedings and claims can be both costly and time consuming and may significantly divert efforts and resources of our management personnel. An adverse determination in any such proceeding could subject us to significant liability and damage our market reputation and prevent us from achieving increased sales and market share. Protracted litigation could also result in our customers or potential customers deferring or limiting their purchase of our products.

The global economic downturn of the past three years has significantly impacted the agricultural industry, with many farmers losing their farms or laying fallow their fields, as well as other negative impacts. The full impact of the current global economic downturn on growers, customers, vendors and other business partners cannot be known with any certainty. For example, major customers may have financial challenges unrelated to us

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that could result in a decrease in their business with us or, in extreme cases, cause them to file for bankruptcy protection. Similarly, parties to contracts may be forced to breach their obligations under those contracts. Although we exercise prudent oversight of the financial strength of our major business partners and seek to diversify our risk to any single business partner, there can be no assurance that there will not be a grower, customer or other business partner that is unable to meet its contractual commitments to us. Similarly, stresses and pressures in the industry may result in impacts on our business partners and competitors that could have wide ranging impacts on the future of the industry.

The capital and credit markets have experienced increased volatility and disruption over the past three years, making it more difficult for companies to access those markets. Although we believe that our operating cash flows and recent access to the capital market will permit us to meet our financing needs for the foreseeable future, there can be no assurance that continued or increased volatility and disruption in the capital and credit markets will not impair our liquidity or increase our costs of borrowing, if we need to access the credit market. Our business could also be negatively impacted if our growers or customers experience disruptions resulting from tighter capital and credit markets or a continued slowdown in the general economy.

Our ability to compete effectively is dependent upon the proprietary nature of the seeds, seedlings, processes, technologies and materials owned by or used by us or our growers. If any competitors independently develop new traits, seeds, seedlings, processes or technologies that customers or end users determine are better than our existing products, such developments could adversely affect our competitive position. We do not rely upon patent protection, but guard our proprietary property by exercising a high degree of control over the alfalfa seed supply chain, as well as over our stevia material. However, because we do not have more formal proprietary rights protections in place, it would be possible for persons with access to our seed or plants grown from our seed to reproduce and market our proprietary seed varieties, which could significantly harm our business and our reputation. Litigation may be necessary to protect our proprietary property and determine the validity and scope of the proprietary rights of competitors. Intellectual property litigation could result in substantial costs and diversion of our management and other resources. If we are unable to successfully protect our intellectual property rights, our competitors could be able to market products that compete with our proprietary products without obtaining a license from us.

The overall market and the price of our common stock and Class A and Class B warrants can fluctuate greatly. The trading price of our common stock and Class A and Class B warrants may be significantly affected by various factors, including:

• economic status and trends in the dairy industry, which underlies domestic demand for our alfalfa seed;

• market conditions for alfalfa seed in the Middle East, where a substantial amount of our seed historically has been purchased by end users;

• quarterly fluctuations in our operating results;

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• our ability to meet the earnings estimates and other performance expectations of investors or financial analysts;

• fluctuations in the stock prices of our peer companies or in stock markets in general; and

• general economic or political conditions.

Our business is highly seasonal because it is tied to the growing and harvesting seasons. Typically, a substantial portion of our revenue is recognized during our first and second fiscal quarters. We generally experience lower revenue during our third and fourth fiscal quarters. Sales in the first and second fiscal quarters accounted for approximately 51% of our revenue for the fiscal year ended June 30, 2011 and accounted for 69% of our revenue in fiscal 2010. If sales in these quarters are lower than expected, expenses may not be offset, which would adversely affect our operating results and would have a disproportionately large impact on our operating results for that fiscal year.

Our future expense estimates are based, in large part, on estimates of future revenue, which are difficult to predict. We expect to continue to make significant expenditures in order to expand production, sales, marketing and administrative systems and processes. We may be unable to, or may elect not to, adjust spending quickly enough to offset any unexpected revenue shortfall. If our increased expenses are not accompanied by increased revenue in the same quarter, our quarterly operating results would be harmed.

In one or more future quarters, our results of operations may fall below the expectations of investors and the trading price of our securities may decline as a consequence. We believe that quarter-to-quarter comparisons of our operating results will not be a good indication of our future performance and should not be relied upon to predict the future performance of our stock price. In the past, companies that have experienced volatility in the market price of their stock have often been subject to securities class action litigation. We may be the target of this type of litigation in the future. Securities litigation against us could result in substantial costs and divert our management's attention from other business concerns, which could seriously harm our business.

At any time after November 3, 2010, provided that our common stock has closed at a price at least equal $8.80 for five consecutive trading days, we may redeem the outstanding Class A warrants, in whole or in part, upon not less than 30 days' notice, at a price of $0.25 per warrant. Our Class B warrants are redeemable, in whole or in part, for $0.25 upon 30 days' notice after November 3, 2010, provided that our common stock has closed at a price at least equal to $13.75. The terms of our warrants prohibit us from redeeming them unless we have a current and effective registration statement available covering the exercise of the warrants. In the event we exercise our right to redeem either the Class A warrants or the Class B warrants, those warrants will be exercisable until the close of business on the date fixed for redemption in such notice. If any warrant called for redemption is not exercised by such time, it will cease to be exercisable, and the holder thereof will be entitled only to the redemption price of $0.25 per warrant. Notice of redemption of the public warrants could force holders to exercise the warrants and pay the exercise price therefor at a time when it may be disadvantageous for them to do so or to sell the warrants at the current market price when they might otherwise wish to hold the warrants or accept the redemption price, which is likely to be substantially less than the market value of the warrants at the time of redemption.

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While the Class A and Class B warrants are outstanding, it may be more difficult to raise additional equity capital.

During the term that the Class A warrants and Class B warrants are outstanding, the holders of those warrants are given the opportunity to profit from a rise in the market price of our common stock. In addition, the Class B warrants are not redeemable by us. We may find it more difficult to raise additional equity capital while these warrants are outstanding. At any time during which these public warrants are likely to be exercised, we may be able to obtain additional equity capital on more favorable terms from other sources.

Sales of a substantial number of shares of our common stock in the public markets, or the perception that these sales may occur, could cause the market price of our stock and redeemable warrants to decline and could materially impair our ability to raise capital through the sale of additional equity securities. For example, the grant of a large number of stock options or other securities under an equity incentive plan or the sale of our securities in private placement transactions at a discount from market value could adversely affect the market price of our common stock or warrants.

Our Board of Directors is authorized by our Articles of Incorporation to establish classes or series of preferred stock and fix the designation, powers, preferences and rights of the shares of each such class or series without any further vote or action by our stockholders. Any shares of preferred stock so issued could have priority over our common stock with respect to dividend or liquidation rights. Although we have no plans to issue any shares of preferred stock or to adopt any new series, preferences or other classification of preferred stock, any such action by our Board of Directors or issuance of preferred stock by us could dilute your investment in our common stock and warrants or subordinate your holdings to the shares of preferred stock.

For holders of our Class A and Class B warrants to be able to exercise those securities, the exercise must be covered by an effective and current registration statement and qualify or be exempt under the securities laws of the state or other jurisdiction in which the warrantholders live. Although we will endeavor to have a current registration statement available at all times when the warrants are in-the-money, warrantholders may encounter circumstances in which they will be unable to exercise the Class A or Class B warrants. We can give no assurance that we will be able to continue to maintain a current registration statement relating to the shares of our common stock underlying the redeemable warrants or that an exemption from registration or qualification will be available throughout their term. This may have an adverse effect on demand for the redeemable warrants and the prices that can be obtained from reselling them.

Yellowjacket, LP, our largest stockholder, owns 1,991,000 shares, or approximately 34%, of our outstanding common stock. Although its ownership interest will decline, if outstanding stock options or warrants are exercised or if it sells or transfers a significant amount of its shares pursuant to an effective registration

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statement, by means of Rule 144, in private transactions or otherwise, Yellowjacket could, for the foreseeable future, have significant influence over our management and affairs and will be able to control virtually all matters requiring stockholder approval, including the election of directors and significant corporate transactions such as mergers or other sales of our company or assets. Its interests could differ from ours and those of our other stockholders. In addition, the concentration of ownership may have the effect of delaying, preventing or deterring a change in control of our company, could deprive our stockholders of an opportunity to receive a premium for their common stock as part of a sale of our company and might ultimately affect the market price of our common stock.

Although we have not provided earnings guidance to date, from time to time, we may release guidance in our quarterly earnings releases, quarterly earnings conference call, or otherwise, regarding our future performance that represent our management's estimates as of the date of release. If given, this guidance, which includes forward-looking statements, will be based on projections prepared by our management. These projections are not prepared with a view toward compliance with published guidelines of the American Institute of Certified Public Accountants, and neither our registered public accountants nor any other independent expert or outside party compiles or examines the projections and, accordingly, no such person expresses any opinion or any other form of assurance with respect thereto.

Projections are based upon a number of assumptions and estimates that, while presented with numerical specificity, are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control and are based upon specific assumptions with respect to future business decisions, some of which will change. If we issue guidance, we will generally state possible outcomes as high and low ranges that are intended to provide a sensitivity analysis as variables are changed but are not intended to represent that actual results could not fall outside of the suggested ranges. The principal reason that we would release guidance would be to provide a basis for our management to discuss our business outlook with analysts and investors. We do not accept any responsibility for any projections or reports published by any such persons.

Guidance is necessarily speculative in nature, and it can be expected that some or all of the assumptions of the guidance furnished by us will not materialize or will vary significantly from actual results. Accordingly, our guidance, if given, is only an estimate of what management believes is realizable as of the date of release. Actual results will vary from our guidance and the variations may be material. In light of the foregoing, investors are urged not to rely upon, or otherwise consider, our guidance in making an investment decision in respect of our common stock, Class A warrants or Class B warrants.

Any failure to successfully implement our operating strategy or the occurrence of any of the events or circumstances set forth in our "Risk Factors" in this Annual Report on Form 10-K could result in the actual operating results being different from our guidance, and such differences may be adverse and material.

Sales of a substantial number of shares of our common stock in the public markets, or the perception that these sales may occur, could cause the market price of our stock and redeemable warrants to decline and could materially impair our ability to raise capital through the sale of additional equity securities. For example, the grant of a large number of stock options or other securities under an equity incentive plan or the sale of our securities in private placement transactions at a discount from market value could adversely affect the market price of our common stock or warrants.

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If we issue shares of preferred stock, your investment could be diluted or subordinated to the rights of the holders of preferred stock.

Our Board of Directors is authorized by our Articles of Incorporation to establish classes or series of preferred stock and fix the designation, powers, preferences and rights of the shares of each such class or series without any further vote or action by our stockholders. Any shares of preferred stock so issued could have priority over our common stock with respect to dividend or liquidation rights. Although we have no plans to issue any shares of preferred stock or to adopt any new series, preferences or other classification of preferred stock, any such action by our Board of Directors or issuance of preferred stock by us could dilute your investment in our common stock and warrants or subordinate your holdings to the shares of preferred stock.

For you to be able to exercise the Class A or Class B warrants, the shares of our common stock to be issued to you upon exercise of the Class A or Class B warrants must be covered by an effective and current registration statement and qualify or be exempt under the securities laws of the state or other jurisdiction in which you live. We cannot assure you that we will continue to maintain a current registration statement relating to the shares of our common stock underlying the Class A or Class B warrants. You may encounter circumstances in which you will be unable to exercise the Class A or Class B warrants. We can give no assurance that we will be able to continue to maintain a current registration statement relating to the shares of our common stock underlying the redeemable warrants or that an exemption from registration or qualification will be available throughout their term. This may have an adverse effect on demand for the redeemable warrants and the prices that can be obtained from reselling them.

Although we have not provided earnings guidance to date, from time to time, we may release guidance in our quarterly earnings releases, quarterly earnings conference call, or otherwise, regarding our future performance that represent our management's estimates as of the date of release. If given, this guidance, which includes forward-looking statements, will be based on projections prepared by our management. These projections are not prepared with a view toward compliance with published guidelines of the American Institute of Certified Public Accountants, and neither our registered public accountants nor any other independent expert or outside party compiles or examines the projections and, accordingly, no such person expresses any opinion or any other form of assurance with respect thereto.

Projections are based upon a number of assumptions and estimates that, while presented with numerical specificity, are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control and are based upon specific assumptions with respect to future business decisions, some of which will change. If we issue guidance, we will generally state possible outcomes as high and low ranges that are intended to provide a sensitivity analysis as variables are changed but are not intended to represent that actual results could not fall outside of the suggested ranges. The principal reason that we would release guidance would be to provide a basis for our management to discuss our business outlook with analysts and investors. We do not accept any responsibility for any projections or reports published by any such persons.

Guidance is necessarily speculative in nature, and it can be expected that some or all of the assumptions of the guidance furnished by us will not materialize or will vary significantly from actual results. Accordingly, our guidance, if given, is only an estimate of what management believes is realizable as of the date of release. Actual results will vary from our guidance and the variations may be material. In light of the foregoing, investors are

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urged not to rely upon, or otherwise consider, our guidance in making an investment decision in respect of our common stock, Class A warrants or Class B warrants.

Any failure to successfully implement our operating strategy or the occurrence of any of the events or circumstances set forth in our "Risk Factors" in the Annual Report on Form 10-K could result in the actual operating results being different from our guidance, and such differences may be adverse and material.

If all of the shares and warrants on the cover page of this prospectus are purchased, we would receive gross proceeds of up to $29,799,000, including full exercise of the representative's warrants and the Class A and Class B warrants that are a component of the units issuable upon exercise thereof, before deducting expenses estimated at $17,000 plus up to 5% of the gross proceeds of the warrants exercised in payment of warrant solicitation fees. We will retain discretion over the use of the net proceeds we may receive from this offering, but we currently intend to use such proceeds, if any, for general corporate purposes.

The shares of common stock issuable upon the exercise of the redeemable warrants will be offered solely by us, and no underwriters are participating in this offering. For the holders to exercise the redeemable warrants issued in connection with our May 2010 initial public offering, there must be a current registration statement covering the common stock underlying the warrants on file with the Commission. The issuance of the common stock also must be registered with various state securities commissions or exempt from registration under the securities laws of the states where the public warrant holders reside. We intend to use our best efforts to maintain a current registration statement while the redeemable warrants and the representative's warrants are exercisable, although we may not be able to do so. The redeemable warrants and the representative's warrants expire on May 3, 2015, unless redeemed earlier.

The outstanding representative's warrants entitle the holders to purchase up to 140,000 units, each unit consisting of two shares of common stock, one Class A warrant and one Class B warrant. Because the common stock and the Class A and Class B warrants underlying the units have separated, upon exercise of the representative's warrants, the holders will receive two shares of common stock, one Class A warrant and one Class B warrant. Under the terms of the representative's warrants, we are registering for issuance common stock, Class A warrants and Class B warrants and the common stock underlying the Class A warrants and Class B warrants, all of which are securities underlying the representative's warrants. We intend to use our best efforts to maintain a current registration statement covering the issuance and resale of the securities underlying the representative's warrants through May 3, 2015. Under the terms of the representative's warrants, we have also agreed to indemnify the representative of the underwriters in connection with the sale of securities underlying the representative's warrants against certain liabilities, including liabilities under the Securities Act. See "Disclosure of Commission Position on Indemnification for Securities Act Liabilities" below.

We have agreed to engage Paulson Investment Company, Inc. ("Paulson"), on a non-exclusive basis, as our agent for the solicitation of the exercise of the Class A and Class B warrants, if we use an warrant solicitation agent in connection with the exercise of the warrants. To the extent not inconsistent with the guidelines of the Financial Industry Regulatory Authority and the rules and regulations of the Securities and Exchange Commission, we have agreed to pay Paulson for bona fide services rendered a commission equal to 5% of the exercise price for each warrant exercised if the exercise was solicited by Paulson. No compensation will be paid to Paulson upon the exercise of the warrants if:

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