Highbrow
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About
If you're looking for flower, vapes, and edibles in Portland, Highbrow is worth a visit. Rated 5 stars
Available Products
THCa in Maine: Legal
7 M.R.S. 2231 defines hemp by 'a delta-9-tetrahydrocannabinol concentration of not more than 0.3% on a dry weight basis, or as otherwise defined in federal law'. Delta-9 alone with no post-decarboxylation requirement in the definition, so THCA flower complies today. Note the tail clause: Maine auto-conforms to the federal definition, so when H.R. 5371 takes effect on November 12, 2026 this row changes without any action by the Legislature.
Separately, the federal hemp definition changes on November 12, 2026, when total THC replaces delta-9 as the test and finished products are capped at 0.4 mg of total THC per container. That applies nationwide regardless of state law.
Status reviewed July 30, 2026. Hemp rules are changing quickly and several are in litigation — verify against your state's statute or agency rule before you buy or sell. This is not legal advice. See all 51 jurisdictions .
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Customer Reviews
Hayden was a huge help. I love their All Good. Best in Portland.
Amazing customer service from Tia and Hayden! Gorgeous selection of flower and pre rolls, and the sweatshirts are SO comfy
Good staff, variety and atmosphere
Best dispo in town Hayden and Caroline are the best around!
Hayden was so lovely and helpful!!! Great atmosphere and options as well!
Really wonderful and friendly service. Hayden was incredibly helpful, informed and patient with all my questions. Walked out with some options I’m excited to try!
Caroline is the best give her a raise
Stopped in randomly while I was passing through Portland and had a lovely experience here. I was taken care of by Joe and Caroline, they took their time explaining all the different products and providing recommendations. The store was bright and fun and I loved their plants.
Favorite spot in portland! Everyone is so friendly. And they have really cool plants
Great place to get weed with extremely friendly and helpful staff. I would highly recommend
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