Known by growers as the best agricultural gypsum supplier in California, Holloway has helped farmers maximize crop and soil health with quality amendments, agronomy and redevelopment services for over 90 years.
Our Products
Along with mining its own gypsum, Holloway carries a wide variety of soil amendments, fertilizers and nutrients to get your soils right.
Our Services
Holloway’s soils-first services include material delivery, spreading, custom agronomy and complete Grave-to-Cradle redevelopment.
Resources
Visit our resources page for company news, agronomy-related blog posts and grower-focused grant information.
Latest From The Blog
Meet with Holloway’s Soil Experts at World Ag Expo
Holloway's team will be on hand at World Ag Expo in Tulare, Calif., on Feb. 10-12, 2026. Visit Holloway at Booth #3505 in Building C of the International Agri-Center.
Improving Infiltration and Reducing Ponding
Having infiltration and ponding issues? Check out the November edition of West Coast Nut, for an article from our own Senior Agronomist Allie Cushnyr, discussing practical solutions for “Improving Infiltration and Reducing Ponding."
Using Winter Rainstorms to Push Gypsum into the Soil
Mother Nature has her own schedule that each of us live by every day. Based on weather forecasts, we decide whether to go on a morning run, seed rye on the lawn and if we want to host a backyard BBQ. Farming feels the same effects.
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