Lebanon Seaboard Corporation has grown from Vernon Bishop’s 1947 purchase of a Lebanon, Pennsylvania, fertilizer plant into a company with six production facilities and more than 250 employees. Still headquartered in Lebanon after more than 75 years, it develops and manufactures turf and garden products for professional grounds managers and homeowners, with its LebanonTurf division known for combining controlled-release fertilizer technology with biological plant nutrition.
Turf Care Supply, LLCSince 1974, Turf Care Supply has manufactured fertilizer for the turf and ornamental industry, operating the first and largest coated-urea plant in the United States. Its five-facility network supports enhanced-efficiency fertilizer production along with contract packing, toll manufacturing, and private-label programs, while proprietary AMP-XC™ technology extends the company’s product-development reach. In 2026, Spring Valley USA acquired Turf Care Supply’s blending and packaging assets; the Martins Ferry operation continues manufacturing enhanced-efficiency fertilizers under the Allied Nutrients name.BRUNSWICK, OH
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
SynaTek SolutionsWith more than 150 years of formulation knowledge, SynaTek Solutions develops and distributes turf, landscape and winter-maintenance products alongside technologies for the people who manage shared outdoor spaces. Based in Souderton, Pennsylvania, the company combines its own manufacturing with distribution and technology divisions, including Branch Creek’s organic line and Secure Winter Products’ Entry de-icer, which became the first Green Seal-certified ice melt on the market in 2019. SynaTek also partners regionally with Husqvarna to bring autonomous mowing to golf courses and sports fields.SOUDERTON, PA
Spring Valley USASpring Valley USA traces its roots to 1960, when it began as the family-owned Vogel Seed & Fertilizer in Jackson, Wisconsin. The company adopted its current name in 1980 and has spent more than six decades building manufacturing expertise for professional turf and landscape customers, now producing fertilizer and ice-melt products at a broader national scale.BRUNSWICK, OH