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Outdoors, the frost sets your deadline.
Short summers and cool nights decide what finishes. Pick outdoor seeds by the month they are ready to harvest.
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Up to 30% off this week
Selected feminized and autoflower seeds, while supplies last.
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35+ years of hands-on growing experience.
Our founder brings more than 35 years of personal, hands-on growing experience to Quebec, helping us select and preserve genetics that truly perform in real-world conditions.
Our Story
QCS founded in 2015
A Canadian seed bank, built by growers for growers. Proudly based in Quebec, QCS is committed to quality genetics and a stronger cannabis seed community — with full support in English and French, because growers across Canada shouldn’t have to choose.
Learn MoreNot sure where to start? Call us at 514-805-2741, Monday to Friday, 11 am to 6 pm EST, and we will help you choose a strain.
Growing guides
View all guides →
Looking for a real Grape Skunk strain review? Here is the full picture on QCS’s own 60% indica hybrid — 17 to 20% THC, 7 to 9 week flowering, deep purple flowers, rated 9.8/10 on GrowDiaries, plus honest notes from real growers. Read More: Grape Skunk Strain Review: THC, Effects, Flowering Time & Yield
10/20/2026 By
QCS
Six ways to keep a grow space from smelling: a carbon filter that matches your fan, sealed airflow, smart timing, strain choice and careful drying.
Read More: How to Control Cannabis Smell When Growing: 6 Methods That Work10/20/2026 By
QCS
What a cannabis phenotype is, how it differs from genotype, why seeds from the same pack can grow differently, and how growers choose a keeper.
Read More: What Is a Cannabis Phenotype? Why Plants From One Pack Differ10/17/2026 By
QCS
A complete Wedding Cake guide with genetics, flavour, effects, flowering time and growing tips for feminized and autoflower seeds.
Read More: Wedding Cake Strain Guide: Genetics, Flavour, Effects and Growing10/15/2026 By
QCS
Feminized and regular cannabis seeds compared: how many plants turn out female, how to spot males, what it means for your space, and which type to buy.
Read More: Feminized vs Regular Cannabis Seeds: What’s the Difference?10/15/2026 By
QCS
Quebec-based online seed bank shipping to Montreal: what to look for, delivery times and the best seeds for a short growing season.
Read More: Cannabis Seed Bank in Montreal: Order Seeds Online From Quebec10/14/2026 By
QCS
Discreet ShippingOrders packed discreetly in Quebec
Free ShippingOn orders over $200
Established in 2015A Canadian seed bank based in Quebec
Robi Hamilton
October 2026
★★★★★
I've purchased seeds from QCS a number of times. They always provide great selection, reasonable prices, and superb customer service.
Google review
Kayla Cantin
October 2026
★★★★★
Fast, reliable and 100% quality
Google review
Phil Gaughan
October 2026
★★★★★
I have made several purchases of seeds over the years. The quality of the seeds has always been of the highest standard, and my germination rates are almost 100 percent. Great variety to choose from including some QC strains that they have developed in-house. Only once did my order not arrive, and customer service handled it immediately and my replacements arrived in two days. Always a couple of freebies as well. Would definitely recommend!
Google review
Christopher May
October 2026
★★★★★
These folks are top notch . My go to for all of My favorite strains .
Google review
Michel Mathieu
October 2026
★★★★★
What a joy it is for me, year after year, to plan my next harvest. I have always used seeds exactly as described in the QS website catalog. Their support is top-notch; all my questions have been answered with enthusiasm and professionalism for the past five years. I encourage those who are starting out or are on their first crop to present their project to the QS team. With a little time, everything will be wonderful, and you will have the best harvest of your life. The biggest difference is that you will know exactly what to expect, which is huge. Michel Weedon, QC
Google review
Gerald Michaud
October 2026
★★★★★
Very informative website, seeds good germination. Grew outdoors with great success on indica varieties.
Google review
james benitis
October 2026
★★★★★
Not bad at all
Google review
Nella Pascal
October 2026
★★★★★
Quebec Cannabis Seeds is a very reliable company to order seeds. They offer many strains and variations (photo plants, auto, feminized, etc...) for you to choose. We have been ordering seeds from QCS since 2022 every year, and have had successful grow all the way to harvest. The germination rate is not 100%, but nothing in nature is. For each strain, we usually get 5 seeds, and out of the 5, at least 3 germinate and grow to an adult plant. When seeds do not germinate, QCS sent us replacement immediately and also offered free gift seeds as an addition. Their shipping is fast and discreet. I highly recommend this company.
Google review
Kelly Maggrah
October 2026
★★★★★
The best seed company in Canada, ive been with them for a few years now always grow amazing flowers and the customer service is awesome 5/5 id recommend if youre looking for a reputable seed shop
Google review
wayne conrad
October 2026
★★★★★
Very good to deal with
Google review
Explore Cannabis Seeds with QCS
Buy Cannabis Seeds Online from Quebec
Quebec Cannabis Seeds (QCS) is a Canadian seed bank that has supplied cannabis seeds to home growers since 2015. We carry more than 300 strains of feminized, autoflower and CBD marijuana seeds, and many are bred and selected in Quebec for northern outdoor conditions: short summers, cool nights and high humidity. Shop all seeds
Indica-Dominant Cannabis Seeds
Indica-dominant strains tend to stay compact and finish earlier, which suits small spaces and short outdoor seasons. Browse indica-dominant seeds
Sativa-Dominant Cannabis Seeds
Sativa-dominant strains tend to grow taller and finish later, so they suit growers with more space and time. Browse sativa-dominant seeds
Autoflower Cannabis Seeds
Autoflower seeds flower automatically, without a change in the light schedule, which makes them popular with beginners and for short northern summers. Browse autoflower seeds
Feminized Cannabis Seeds
Feminized seeds are bred to produce female plants, the ones that grow the flowers, so there are no males to sort out. Browse feminized seeds
Choosing Seeds for Indoor Growing
Indoors you control light, temperature and humidity, so most feminized and autoflower strains do well. Our indoor growing guide covers lights, tents and setup. Read the indoor growing guide
Choosing Seeds for Outdoor Growing
Choose outdoor seeds by the month they are ready to harvest. See our guide to the best outdoor strains for Quebec. See the best outdoor strains
Cannabis Seeds for Beginners
For a first grow, choose forgiving, easy-to-grow strains. Browse seeds for beginners
Why Choose Quebec Cannabis Seeds?
You are buying directly from the breeder: QCS has bred and selected seeds in Quebec since 2015, led by a grower with more than 35 years of experience. Every order ships from our own location in Quebec in discreet packaging. Why choose QCS
Frequently Asked Questions
Where does Quebec Cannabis Seeds ship?
We ship cannabis seeds across Canada and to the USA. Orders over $200 ship free.
How does direct shipping work?
Every order ships from our own location in Quebec, usually the same day or within 24 hours of payment confirmation, Monday to Friday via Canada Post, in discreet packaging with no logos. Express delivery includes a tracking number. Read our shipping information.
What does Quebec Cannabis Seeds guarantee?
Two separate things: delivery is guaranteed at 100%, and germination is guaranteed at 80% (we send replacement cannabis seeds if fewer than 80% of your seeds germinate). See our Trust & Guarantees page and our FAQ page.
Can I grow autoflowers on a balcony?
Yes. Autoflowers stay compact and are usually ready to harvest in August, before the damp weather that causes mold and bud rot. Read Trent LaPierre's guide to growing autoflowers on a balcony.
Are any QCS strains mold-resistant?
No strain is 100% resistant to mold. Some QCS lines are mold tolerant — meaning they hold up better than average in damp, humid conditions — and we only say so where real growing results support it. The strongest defence against mold and bud rot is still a short finish time, good airflow, proper spacing and not over-watering.
What is the difference between feminized and autoflower seeds?
Feminized seeds are bred to produce female plants. Autoflower seeds flower automatically, without a change in the light schedule.
Which cannabis seeds suit beginners?
Forgiving strains and autoflowers are a good first choice, because they are easier to grow and flower on their own schedule. See our cannabis seeds for beginners.
Do I get free seeds with my order?
Yes. We add free cannabis seeds to every order.
Which seeds are best for growing outdoors in Canada?
Choose by harvest month. Most autoflowers finish in August, early photoperiod strains finish in September, and longer-season strains finish in October. Our outdoor category lists strains selected for short summers and cool nights.
How many seeds are in a pack?
Most packs contain 5 seeds. Mixed packs contain 8.
How can I order?
Order online with Visa or Mastercard, or by phone at 438-800-4298, Monday to Friday, 10 am to 6 pm EST.
18+ • Follow the laws that apply in your location.