California Seed Zones

• Published by: CAL FIRE
• Last updated: Saturday, June 7, 2025
• File types: HTML, ARCGIS GEOSERVICES REST API, CSV, ZIP, GEOJSON, KML, TXT, XLSX, GPKG, GDB

California seed zone boundaries were first proposed in 1946, revised, and published as a joint report between the U.S. Forest Service and CAL FIRE in ...