Since 1988, Suståne Natural Fertilizer has manufactured organic and natural slow-release nitrogen fertilizers and soil builders from aerobically composted agricultural resources at its Minnesota operation. Its products are used by growers, turf managers and horticulturists in more than 60 countries, with the company controlling its raw materials, composting and manufacturing processes in-house. Suståne also maintains an analytical chemistry lab and supports its formulations with more than 800 independent studies.
OMRI Listed
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USDA BioPreferred 100% Bio-Based
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Washington State Department of Agriculture Organic Input Materials List
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California Organic Input Material Program
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USDA National Organic Program
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Food Safety Modernization Act Compliance
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Fertilizer Registrations in All 50 U.S. States
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International Product Registrations
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Espoma OrganicFounded in 1929 by H.G. Sanders, Espoma Organic makes natural and organic fertilizers and soil products for home gardeners. Still family-owned through five generations, the South Jersey company operates manufacturing facilities in New Jersey and Pennsylvania, including a solar-powered Millville plant and a 60,000-square-foot facility in Hegins. Its long-running Tone fertilizer line, including the original Holly-tone introduced in 1946, has helped make organic gardening a family tradition for more than nine decades.HEGINS, PA
Salem Organic Products, IncFor nearly three decades, Salem Organic Products, Inc. has turned a farm-waste problem into Sweet Peet®, a 100% organic mulch made from composted agricultural manure. The company also produces Soilution®, an organic soil mix with biochar, and provides manure removal and recycling services for horse and cow farms. Sweet Peet holds two U.S. patents, a Canadian patent, and trademarks in both countries for its branded products.PAWLING, NY
EnviroKure, IncFounded in 2011, Hicksville, Ohio-based EnviroKure develops and produces naturally derived biostimulants and organic biofertilizers made from chicken manure. The company grew from a garage project into the only company it identifies as having patented and commercialized this chicken-manure-derived technology, with a flagship facility designed to serve as many as 4 million acres. Its products are intended to improve soil health, plant resilience, and productivity for conventional and organic farmers.325315PHILADELPHIA, PA
Growers Mineral, CorpFounded in 1955 by an agricultural researcher, a fertilizer marketer and a business manager, Growers Mineral, Corp. produces and sells its non-toxic Growers Mineral Solution liquid fertilizer from Milan, Ohio. The family-owned company still operates from a former 1905 brewery and now serves farmers across 27 U.S. states, Ontario and Quebec. Its program pairs the fertilizer with practical soil-health guidance, on-farm research and educational meetings, carrying the founders’ agricultural approach into a third generation of day-to-day leadership.MILAN, OH