Canada's leading source for all things cannabis. For us, it’s about more than just a cannabis retail experience. It’s about starting a conversation and opening minds to fresh perspectives. And, perhaps most of all, it’s about becoming a part of the fabric of every neighbourhood that welcomes us.

Our team of experienced buds hand-pick our menu and personally test and review the products we carry for quality, and to  assure we carry only the best options of flower, pre-rolls, 510 vape cartridges, edibles, or  hash and concentrates/ extracts in our store!

Come visit us at 75 Bayly St West, Ajax, Ontario 

4K Cannabis is located on Bayly Street in the LCBO plaza, right beside the TD Bank. 


4K Cannabis - Ajax

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O.pen the o.riginal cannabis pen. We started extracting cannabis oil in 2010 and haven't stopped since. With more than 100,000 hours clocked in R&D we're in relentless pursuit of bringing you the best cannabis oil extracts to satisfy any occasion. 

If you're entry-level looking for a consistent, repeatable experience or a cannaseur wanting to experience the nuances of cannabis terpenes - O.pen has an award-winning product for you backed by a Friend for Life satisfaction guarantee. Go with the O.

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