
Cannabis seeds in CanadaGrown for Canada.
Selected with care.
Explore feminized, autoflower and outdoor cannabis seeds from Montreal Cannabis Seeds.
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Cannabis seeds, selected in Canada.
Explore feminized, autoflowering, fast version and CBD seeds from Montreal Cannabis Seeds. Compare genetics and strain information, discover our Quebec collection, and find options for your space and season.

For beginners
Your first seeds.
A clearer place to start.
New to cannabis seeds? Explore feminized and autoflower varieties from Montreal Cannabis Seeds. Compare strain information, plant size and flowering time to make an informed choice for your first grow.
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Our own genetics
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Quebec line.
Our own line of carefully selected genetics for Canadian growers. Explore strains that thrive in our environment.
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A Canadian seed bank you can count on.
Selected genetics
A Canadian seed bank with more than 10 years of experience and a catalog built around clear strain information.
About MCS ›Discreet delivery
Orders ship in plain packaging with no branding to customers in Canada and the United States.
Shipping details ›Germination support
An 80% germination guarantee applies for 90 days after purchase. See the full replacement terms.
View guarantee ›Latest Cannabis Growing Articles
THC Levels in Cannabis: Why Today's Weed Is So Much Stronger
Humans have used cannabis for thousands of years, but the push for high-THC cannabis is surprisingly recent. In fact, scientists didn't even know what THC (tetrahydrocannabinol) was until 1964, when chemist Dr. Raphael Mechoulam first...
Read MoreBat Guano In Cannabis Cultivation
Bat guano is a natural soil amendment that some cannabis growers use to support nutrient availability, microbial life, and overall plant health. It is not magic dust, and it is not the only good cannabis fertilizer, but it can be useful when handled carefully and...
Read MoreWhat is an F1 cannabis seeds?
F1 cannabis seeds are first-generation seeds produced from two distinct, stable parent lines. For cannabis enthusiasts, breeders, and collectors, they are often discussed for their potential uniformity, strong hybrid traits, and genetic consistency compared with less...
Read MoreBreeding Cannabis – A Comprehensive Guide
Breeding Cannabis is the practice of selecting parent plants, making controlled crosses, and growing the next generation to discover or preserve desired traits. For growers interested in cannabis cultivation, it can be a rewarding way to shape cannabis...
Read MoreHydrogen Peroxide for Plants: Why and How Growers Use It
Hydrogen peroxide is probably something you associate with the medicine cabinet or household cleaning, but it has also become a popular tool among indoor gardeners and cannabis growers. When used carefully, hydrogen peroxide for plants can...
Read MoreThe Effects of Sativa Cannabis Strains: A Complete Guide
If you've ever felt a cannabis strain clear the fog from your mind, sharpen your focus, or pull you gently upward into a burst of creativity, you've met the sativa side of the plant. Where indicas are known for settling you into the couch,...
Read MoreWhy You Should Grow Autoflowers: The Smart Choice for Speed, Simplicity, and Repeat Harvests
If you've spent any time browsing seed catalogs, you've probably noticed autoflowers dominating the shelves. Once considered a niche option for growers who wanted speed over potency, modern autos have...
Read MoreFungus Gnats in Cannabis: How to Get Rid of Them
You water your cannabis plant, give it a gentle breeze, and notice a few tiny black flies drifting around the soil surface. They look like fruit flies. You wave them off. A week later, your seedling's lower leaves are yellowing, growth has slowed...
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