California Cannabis Terroir Atlas
California Cannabis Terroir Explorer
Explore how geology, climate, water, living ecosystems, agriculture and cultivation interact with cannabis across California — from the Pacific redwood belt to interior valleys, mountain watersheds, the Central Coast and Southern California.
Interactive Regional Index
California Terroir Map
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The Terroir System
Place is a living system.
Terroir is not a claim that geography alone determines quality or chemistry. It is the interaction of genetics, environment, cultivation, ecology and culture.
GEOLOGYParent rock + landform
SOILRoots + microbiology
WATERWatershed + irrigation
CLIMATELight + heat + fog + wind
ECOLOGYPlants + insects + wildlife
CULTIVATIONHuman selection + method
EXPRESSIONPhenotype + chemistry
Genetics × Environment × Cultivation × Culture
Region 01
Emerald Triangle
Humboldt • Trinity • Mendocino
Pacific CoastRedwood ForestRiver ValleysInterior MountainsLegacy Sungrown Culture