Cannabis in Bangkok: A Local Guide

By Siam Green · · Updated 29 June 2026
Cannabis in Bangkok, a local and legal guide from Siam Green Cannabis Co

Thailand went from one of the strictest cannabis regimes in the region to the first country in Southeast Asia to pull the plant off its narcotics list. That shift happened fast, and the rules around it are still worth understanding before you form an opinion about what is and is not allowed here. This is a plain guide to where the law stands and how Bangkok’s cannabis scene is laid out, including where Siam Green’s branches sit across the city and on Koh Samui.

Key Takeaways

Yes, with conditions. In 2019 the Thai government loosened its rules and allowed cannabis for medical and health purposes. The bigger change came on June 9, 2022, when every part of the plant, including the root, stem, stalk, leaf, flower bud, inflorescence, and seeds, was removed from the country’s narcotics list. One line stayed on that list: extracts containing more than 0.2% THC. Everything below that threshold came out from under narcotics control, and that is the legal footing the current market sits on.

Cannabis stays legal in Thailand unless the government updates or reverses the policy. The rules have been debated repeatedly since 2022, so it is worth checking the latest regulations rather than assuming today’s situation is permanent.

Rules to Know Before You Go

A few rules apply across the country. You have to be at least 20 years old to buy cannabis, and you will be asked for valid ID to prove it. People under 20, along with pregnant and breastfeeding women, cannot buy cannabis products unless a health professional is supervising. Smoking in public is illegal. Use is meant for private spaces or designated areas, not the street or the BTS platform.

It is also worth being choosy about where you go. Plenty of shops opened in a hurry after 2022, and standards vary a lot from one to the next. A licensed dispensary operating under Thai regulations is the safe starting point. If you want to know what separates a properly run shop from the rest, read our guide on how to tell the good dispensaries from the bad ones.

Where Siam Green Sits in Bangkok and Koh Samui

Siam Green Cannabis Co is a licensed retailer with branches in Bangkok and one on Koh Samui. Each one sits near a landmark you can find without much trouble. Here are all of our branches:

If you are already in one of those neighborhoods, you are within walking distance of a branch where staff can answer questions in person.

A Word on Flower and Edibles

Licensed shops in Thailand carry cannabis flower along with FDA-approved edibles such as gummies. If you are new to any of it, the terminology gets confusing quickly. Our beginner’s guide to cannabis strains explains how indica, sativa, and hybrid actually differ, and our guide to THC covers what that number on a label means. For anything more specific, the team at any branch can talk it through with you face to face.

Questions? Ask Our Staff

New to cannabis, or just not sure which branch is closest? You do not have to figure it out alone. Call or message any Siam Green branch and the staff will answer questions about hours, location, the law, or the plant itself.

Call us: +66 96 893 0545

Add us on LINE: @siamgreenco

Email us: [email protected]

Or follow us on Facebook & Instagram!

To Sum Up

Thailand took cannabis off its narcotics list in 2022, and the plant has been legal here since, within a few firm limits: extracts above 0.2% THC are still controlled, you have to be 20 with valid ID to buy, and public smoking is off limits. Siam Green Cannabis Co runs licensed branches near landmarks across Bangkok and on Koh Samui, and the staff there are happy to answer questions in person. When the rules are this specific, it pays to ask someone who works under them every day.

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