Special order for a customer! If you dont see it in store, we can probably get it for you.

One of the most common deficiencies during the vegatative growth and flowering cycles is calcium, magnesium & iron. These deficiencies can cause nutrient lockouts, disease prone & decaying foliage associated with various of other plant vital health issues. Cal/Mag is the solution to maintain heal...

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New products coming in daily!! We have all the best brands for your cannabis plants. Swing by your local grow shop and let us help you grow the best buds possible!πŸŒΏβ˜€οΈ

Full shelves of any nutrient you could want/need for your plants.🌱 Come on down to Green Leaf Hydroponics and let us help you to the best product for your specific needs!


May 9, 2019 – May 21, 2019

We carry all the best brands of growing mediums! Promix Mycorrhizae, Canna Coco, Coco Bricks, Cocotek, Coco Earth, Sunshine #4, Black Gold #4, Promix Potting Mix, Promix Vegetable and Herb Mix, Promix Premium Organic Seed Starter Mix, Root Farm Potting Soil, F...

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Time to get ready for the outdoor season! Swing on by for our wide selection of soils, soilesses, super soils, coco & all growing mediums! We carry all of the best brands in the business.

Think your plants may be stressed? Heat and other poor conditions can be a culprit for the beginning of other problems such as nutrient deficiencies for seedlings to vegatating and mature flowering plants. By giving your plants these organic/hydroponic nutrients that include B vitamins, seaweed&k...

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6 months ago
I highly recommend green leaf hydroponics to anyone looking for anything grow related..I had the pleasure of dealing with Jack while buying my first set up.. He is super knowledgeable very friendly and was more then happy to answer and explain anything I had questions about..I left the store with everything I needed and a ton of knowledge about the products to get me going..overall I couldn't be happier with my experience and will be reccomending the store to all of my buddies..I look forward to shopping here again in the near future.. It's not often you find a hidden gem like this one.
- Ron H
5 months ago
The owner of this store saved my DWC plant from certain doom. After my first Reservoir change the very next day all my roots turned light brown, this made me super sad. Not to mention i have not been able to keep my PH in check using PH perfect Advanced Nuits, i was getting really puzzled. I told my issues to the owner and he recommended what i now consider miracle Liquid for Hydroponics " DN Hydro Sparkle". This stuff in a matter of hours had my roots white and healthy again, with the massive side bonus of fixing my PH issue. When i checked 20 hours later PH was still 5.9 and my roots shiny white again. Huge thank you to the owner of this store and his knowledge.
2 weeks ago
First time going, they had exactly what I was looking for. Will be back
- Ray S

Brand new hydroponic store!

We carry all the best brands in the business at competitive prices. Come see for yourself!

Contact Us


Call now
  • (905) 240-2022


Get directions
East End Of no Frills Plaza On Bloor In The Back
197 Bloor Street East #3B
Oshawa, ON L1H 3M3

Business Hours

Mon:9:00 AM – 6:00 PM
Tue:9:00 AM – 6:00 PM
Wed:9:00 AM – 6:00 PM
Thu:9:00 AM – 6:00 PM
Fri:9:00 AM – 6:00 PM
Sat:10:00 AM – 6:00 PM
Sun:10:00 AM – 5:00 PM
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