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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California Cannabis Terroir Map placeholder
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