What the law says
Illegal
Recreational
Illegal (flower is a controlled herb; sales need a Thai prescription since June 2025)
Partial
Medical
Legal (PT 33 prescription from a Thai-licensed practitioner, up to a 30-day supply)
Legal
Growing
Legal for home growing (commercial growing and sale need a licence and GACP certification)
Local guide
Crowd-sourced guide, not legal advice. Laws change.
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Where to buy, prices and law enforcement notes for Chiang Rai.
