Quebec Roots. Exceptional Cannabis Genetics.

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 strains tend to stay compact and finish earlier, which suits small spaces and short outdoor seasons. Browse indica-dominant 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 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 seeds are bred to produce female plants, the ones that grow the flowers, so there are no males to sort out. Browse feminized seeds →

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 →

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 →

For a first grow, choose forgiving, easy-to-grow strains. Browse seeds for beginners →

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. Every strain is germination-tested, with results of 98 to 100%, and we publish the results. Why choose QCS →

We ship cannabis seeds across Canada and to the USA. Orders over $200 ship free.

Every order ships from our own location in Quebec, usually the same day or within 24 hours of payment confirmation, Monday to Friday (Canada Post for Canadian orders, UPS Express for US orders), in discreet packaging with no logos. Express delivery includes a tracking number. Read our shipping information.

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). No proof is required: email or call us and replacements ship the same or next day. See our Trust & Guarantees page and our FAQ page.

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.

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.

Feminized seeds are bred to produce female plants. Autoflower seeds flower automatically, without a change in the light schedule.

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.

Yes. We add free cannabis seeds to every order.

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.

Most packs contain 5 seeds. Mixed packs contain 8.

Order online with Visa or Mastercard, or by phone at 438-800-4298, Monday to Friday, 10 am to 6 pm EST.

Yes. Every strain we sell is germination-tested, with results of 98 to 100%: 60 strains have third-party lab results from our production partner, and every strain is also tested in-house in Quebec, Canada. See the results by strain.

QCS answers emails the same day or within 24 hours.

Yes. Free seeds are the same quality as paid seeds, and often better: QCS deliberately gives its best genetics and strains as free seeds so customers can try something amazing.