Known as the industry’s most-trusted agricultural gypsum provider since 1932, Holloway has helped farmers maximize crop and soil health with quality soil 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
Fighting Fertilizer Inflation from the Ground Up
As imported fertilizer costs soar, growers are regaining control with proven locally produced soil amendments like gypsum and compost.
Grower Testimonial: Corbitt Smith, Reina Rosa Farming
When it comes to growing roses in Wasco, Corbitt Smith, owner of Reina Rosa Farming, says it starts with the foundation beneath his boots. “One of the most important things about growing roses here is the soil,” he said. “Wasco is a great place to grow anything, and I think the ground is the key there.”
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.
Providing Tools for Growth
Our diverse portfolio of soil amendments means that you will get the exact product for your particular soil need.
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