About Us - Superior Soil

Superior Soil

...is a premier provider of high-quality agricultural amendments and soil health solutions throughout California’s Central Valley. Specializing in essential minerals and custom blends, the company offers a comprehensive suite of products—including Gypsum, Limestone, Dolomite, Sulfur, and Compost—designed to optimize soil structure and enhance crop yields for both conventional and organic farming. By combining technical expertise with a commitment to precision, Superior Soil provides critical services like water and soil testing to ensure growers apply the exact nutrients needed for peak performance.

Key Offerings & Specialties

Superior Soil supports a wide range of industries, from large-scale agriculture to specialized turf management. Our primary solutions include:

Soil Conditioners
High-grade Gypsum sourced from Nevada to improve water penetration and break up compacted soil. (more...)

Custom Blending
Tailored Compost and Amendment Blends that allow for a single, uniform spreading operation, saving time and ensuring micronutrient accuracy. (more...)

Nutrient Management
Limestone and Dolomite applications to balance soil pH and maintain proper calcium-to-magnesium ratios. (more...)

Sulfur As A Plant Nutrient
Sulfur is taken up by plants primarily as a sulfate. Sulfate is important in photosynthesis and plant metabolism, which produces proteins, enzymes, and amino acids. (more...)

Custom Amendment Blends
We can also combine compost/manure into custom amendment blends with soil amendments such as Gypsum, Zeolite, and other amendments. (more...)

Specialized Markets

Fresh grass with moisture beds close up.

Dedicated products and support for Landscape & Nursery professionals as well as Golf & Sports Fields.

Expert Note

Zeolite and NPK Amendments

Superior Soil's use of Zeolite and NPK amendments provides a modern approach to plant metabolism and stress tolerance, ensuring long-term sustainability for the land.