I've tried many of the dispensaries in the city (20+ at this point). Most of them sell overpriced and underwhelming weed. There's only a couple physical shops I can recommend.
Hybrid is pretty good if you don't mind making a drive about 5-10 mins north of Nimman.
Space Trees is solid if you're in Nimman, they have great prices compared to all of the neighboring shops in Nimman.
If you're like me though and you don't want to leave the house every time you want to pick up new stuff, ThaiTopShelf.com is a good option. They are a delivery service which deliver for free within the city of Chiang Mai. Everything I've gotten from them has been fire and they offer deals on bigger amounts.
Another great option is Wake n Bake in the old city near Tha Pae Gate.
