About Siam Green
Five branches across Bangkok and Koh Samui, run by people who care what you leave with. A licensed dispensary chain, working inside Thailand’s medical cannabis rules.
Why we exist
When Thailand opened cannabis access in 2023, hundreds of new shops appeared almost overnight. Plenty of them see the person walking in as one more upsell. We set out to build the opposite.
Siam Green is a chain of five branches built around three rules. Every cannabis flower on our shelves is one we would choose ourselves. Our budtenders are paid to help, not to push. Our spaces are quiet, well lit, and easy to ask questions in. New to cannabis? You should feel welcome. Know exactly what you came for? We will get out of your way.
We are a Thai company, run by people who live here. Cannabis is a controlled herb under Thai Ministry of Public Health rules, so every visit starts with an in-branch consultation and assessment, your photo ID or passport, and a medical-cannabis prescription (form ภ.ท.33 / PT 33) from a licensed practitioner. You bring the questions. We bring the answers, and never the pressure.
Bangkok · Koh Samui
Our budtenders are trained to answer questions, not push a product. If the right call for you is a smaller amount, or no purchase at all, that is what we will tell you.
We carry less flower than most dispensaries, on purpose. Every jar on the shelf comes from growers we know personally, and every visit is supported by hands-on guidance from our team.
Bangkok and Samui are bright, busy places. Our shops are not. The whole point of walking in is that you can breathe out for a minute and ask whatever you need to ask.
Thai company, Thai team, Thai customers as much as visitors. We work inside the rules set by the Ministry of Public Health, we answer the phone, we read the reviews, and we show up the next day.
Who runs this
Siam Green is a tight Thai team of owners, budtenders, and back-of-house staff who know cannabis well and like talking about it. Most of us have been here since the original Phrom Phong shop opened in 2023. Some of us grew up in the neighborhoods we now serve. We are a dispensary, not a clinic, so the prescription itself comes from a licensed practitioner. Our job is to make the consultation in branch easy and clear.
If something feels off when you visit, we want to hear about it. That is why our owners read every review and reply to most of them within a day.
Drop into the nearest branch and talk to our team. Bring your photo ID or passport, and remember that access is for adults 20 and over, by prescription, with no public consumption. Visiting from abroad? Foreign prescriptions are not valid in Thailand, and bringing cannabis in or out of the country is prohibited. We are better in person.
Find your nearest branch
