Themes
Mapping & Assessing Unlicensed Cannabis Cultivation
Data mapped from 2018-2024 analyzes changes in cultivation density, identify key drivers of change, and assess the distribution of cannabis relative to environmental resources.
Indoor Cannabis Cultivation
Indoor cultivation developed in response to cannabis prohibition and enforcement – it is often easier to hide and expensive (e.g. energy, water, rent, security).
Dynamics of Licensed Cultivation and Supply Chain
Learn about region-based licensed cannabis harvest and production between 2019 and 2025 and supply chain transaction dynamics.
Transformation of Unlicensed Cannabis Cultivation Since Legalization
This brief outlines the transformation of unlicensed cultivation since legalization based on over 150 extended interviews with people involved with cannabis cultivation in three regions of California.
English – Outcomes of Local Cannabis Cultivation Bans on California Communities
Local commercial cannabis cultivation bans add administrative cost and lead to economic and social inequities.
Hmong – Tej Yam Uas Yuav Tshwm Sim Yog Tias Txoj Kev Cog Xas Raug Txwv Hauv
Kev lag luam cannabis cog qoob loo hauv zos txwv tsis pub ntxiv cov nqi tswj hwm thiab ua rau kev lag luam thiab kev tsis sib xws.
Español – Resultados del cannabis local Prohibiciones de cultivo en California Comunidades
Las prohibiciones locales del cultivo comercial de cannabis añaden costos administrativos y generan desigualdades económicas y sociales.
Water Use: Cannabis in Context
After reviewing data from Humboldt and Mendocino County watersheds, researchers find that keeping cannabis farms in the licensed market is key for preventing impacts to streams.
Cannabis Agriculture 101
Is cannabis legal to grow and sell? How is it grown? How widespread are farms and facilities? Explore the facts of California cannabis agriculture and regulation.
Variation in Local-level Cannabis Cultivation Bans in California
Proposition 64 granted California localities (cities and counties) the ability to ban commercial cannabis cultivation. Now over two-thirds of local jurisdictions have banned cultivation.
Environmental Impacts of Local Cannabis Cultivation Bans
Cultivation bans do not stop cultivation or environmental consequences of farming, and may worsen them.
Cannabis Agriculture and Wildlife
Explore how cannabis cultivation can threaten wildlife, what growing practices can reduce impacts near sensitive habitat, and what we still need to learn.
Land Use in Cannabis Agriculture
Explore the location of California’s cannabis farms and the environmental impacts of land use decisions in cannabis growing regions.
Barriers to Compliance
We surveyed California’s cannabis farmers to understand their decisions to comply with the state’s licensing initiative. Explore our 2019 results to learn specific barriers to compliance.
