The University of California does not provide soil or plant tissue testing services for growers. There are a number of laboratories that do provide this service. UC does not endorse any one laboratory and we recognize this list may not be complete.
Selected soil, water, and tissue sampling laboratories
Other Soil Resources
- Foothill Soils: link to our soils page found under the Viticulture menu.
- Grapevine nutrition: link to our grape nutrition page found under the Viticulture menu. Provides information on how to petiole sample.
- Facts about Serpentine Rocks and Soil containing Asbestos in California: link to FREE UC publication by UCANR experts Rachel Elkins, Toby O'Geen, Robert Reynolds and James Meyers.
- Web Soil Survey - Web Soil Survey (WSS) provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world.