Bangkok and Koh Samui's Top Cannabis Dispensary Chain

Five branches, real conversation, and unhurried guidance from knowledgeable budtenders.

Find your branch

Five branches across Bangkok and Koh Samui.

Siam Green Phrom Phong dispensary interior

Phrom Phong

Phrom Phong BTS, next to EmQuartier

Siam Green Nana dispensary interior

Nana

Sukhumvit between Soi 10 and 12, near Asoke BTS

Siam Green Chinatown dispensary interior

Chinatown

Maha Chai Road, around the corner from Jay Fai

Siam Green Silom dispensary interior

Silom

Sala Daeng BTS exit 4, two minutes from Patpong

Siam Green Chaweng dispensary interior

Chaweng

Chaweng Beach Road, opposite Central Samui

Loved across five branches.

5.0 from 6,343 Google reviews.

Education-first.

Our budtenders are trained to help you choose, not sell to you.

Curated quality.

Custom humidity-controlled units. We pick strains for their character.

Unhurried by design.

Comfortable coworking spaces. Knowledgeable budtenders. The pace is yours.

Press Highlights

Siam Green Cannabis Co shopping bag with a bouquet of fresh flowers

Most of our customers come in unsure what to ask. That's exactly where we like to start. Whether you've never tried cannabis, you have a specific question about quality or method, or you just want to sit for a minute and figure it out, our team will walk you through it at the pace that fits.

Learn more about how we do things →

From the journal.

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Questions

Quick answers.

Is cannabis legal in Thailand?

Cannabis flower is legal for medical use only. It is classified as a controlled herb under Ministry of Public Health regulations, and any purchase requires a valid prescription (form พ.ท.33 / "PT 33") issued by a licensed Thai practitioner following a consultation. We operate under these rules at every branch.

Do I need a prescription, and how does it work?

Yes — a prescription is required for every purchase. A licensed practitioner conducts a consultation to assess whether cannabis is medically appropriate for you. If it is, they issue a PT 33 prescription, valid for up to a 30-day supply. Whether a prescription is issued depends entirely on the practitioner's medical assessment.

Can visitors from outside Thailand access medical cannabis?

Absolutely, but with a prescription from a licensed Thai practitioner. Prescriptions and medical cards from other countries are not valid in Thailand, and importing cannabis is prohibited. Please bring photo ID.

What else should I know?

Public consumption is prohibited and can result in fines. Keep products in their original labelled packaging together with your prescription.

Stop by when you're nearby.