Sarnia cannabis stores: 15 licensed shops by the Blue Water Bridge
Verdex lists 15 AGCO-authorized cannabis stores in Sarnia, on London Road and Murphy Road, plus why nothing may cross the Blue Water Bridge.
This page is about Canada — not the country you picked in the header.
- Dispensaries rated
- 11
- License verified
- 11
Sarnia sits at the foot of the Blue Water Bridge, and Port Huron, Michigan, sells legal cannabis too. Federal law on both sides still bars taking any of it across the border, in any amount and in either direction.
On the Canadian side Verdex lists 15 AGCO-authorized stores. Council said yes to private shops in December 2018 with only two councillors opposed, and a city survey found 87.8 per cent of respondents in favour. The first store, Bluewater Joint, opened in January 2021. You must be 19 to buy, and ID is checked at the door.
Showing 11 of 11 dispensaries in Sarnia
- 01Canna CabanaSarnia · Dispensary Licensed—
- 02Discounted CannabisSarnia · Dispensary Licensed—
- 03Highlife BluewaterSarnia · Dispensary Licensed—
- 04Homegrown CannabisSarnia · Dispensary Licensed—
- 05J.J's JOINT CANNABISSarnia · Dispensary Licensed—
- 06Sessions Cannabis SarniaSarnia · Dispensary Licensed—
- 07The Hunny Pot Cannabis CoSarnia · Dispensary Licensed—
- 08The We StoreSarnia · Dispensary Licensed—
- 09True North Cannabis CompanySarnia · Dispensary Licensed—
- 10Yield Cannabis Co.Sarnia · Dispensary Licensed—
- 11Your Highness CannabisSarnia · Dispensary Licensed—
Pins show sellers with a published street address. Online-only sellers appear in the list only.
28 public warnings about sellers in Canada
Regulator actions, recalls and look-alike sites we track. Check a shop or link before you pay.
See the Red ListLondon Road, Murphy Road and downtown Sarnia
Two roads carry most of the list. On London Road are Canna Cabana at number 1355 and Discounted Cannabis at 1380, and on Murphy Road are Highlife Bluewater at 940, J.J's Joint Cannabis at 914 and Sessions Cannabis at 600. Discounted Cannabis has three Sarnia addresses, including George Street and Confederation Street, and Homegrown Cannabis is downtown on Christina Street North.
- Cross-border: read what both border agencies say before you carry so much as a pre-roll to Michigan.
- Buying limits: up to 30 grams of dried cannabis or its equivalent per purchase, and shops must check ID at entry.
- Consistency: because the Ontario Cannabis Store is the only wholesaler, the products are the same across town; price and service are the variables.
Stores come and go, so confirm a shop on the AGCO map before a special trip. Sarnia is one of several Ontario border cities on Verdex; Windsor across from Detroit has its own store list.
Questions about this list
Can I take cannabis from Sarnia into Michigan?
No. Cannabis remains federally illegal in the United States, and Canadian law also bars export. Bringing it across the Blue Water Bridge in any amount risks seizure, fines and being barred from entering the U.S.
When did Sarnia get its first legal cannabis store?
Bluewater Joint, a family-owned shop, opened in January 2021, according to the Sarnia Journal. Council had voted in December 2018 to allow private stores.
Buying in Canada
Minimum age
18 in Alberta, 21 in Quebec, 19 in all other provinces and territories.
Possession
30 g of dried cannabis or equivalent in public (1 g dried = 5 g fresh, 15 g edible solids, 70 g non-solid products, 570 g beverages, 0.25 g concentrates or 1 seed). Some provinces cap home storage, e.g. 150 g per residence in Quebec and 1,000 g per household in B.C.
Home grow
Up to 4 plants per residence under federal law. Prohibited in Quebec. Manitoba passed Bill 34 in June 2024 and home growing became legal there on May 1, 2025 (19+, up to 4 plants per household, grown indoors; gov.mb.ca).
Public use
Set provincially: generally allowed where tobacco smoking is in Ontario and B.C. (with exceptions); smoking and vaping banned in all public spaces in Quebec; no public consumption in New Brunswick; private dwellings only in PEI; restricted in Alberta and Nova Scotia; not in vehicles.
Summary, not legal advice — rules change; check local law.
How this list is ranked
- License & compliance25%
- Customer reviews25%
- Lab & product transparency20%
- Pricing & value10%
- Service & access10%
- Complaint handling10%
Scores come from license records, published lab results, prices and public reviews. Sellers can’t pay to change their position.
How we rate