Autoflower Seeds Canada

Autoflower Seeds Canada

Autoflower cannabis seeds flower automatically based on plant age rather than a change in light schedule, giving growers a simpler timeline and typically faster results than standard photoperiod strains. This makes them a popular choice across Canada for indoor grows, short outdoor growing seasons, and anyone who prefers a more straightforward routine without needing to switch lighting schedules to trigger flowering. Every autoflower in this collection is feminized, ships discreetly across Canada, and is backed by our 100% shipping guarantee and 80% germination guarantee for 90 days.

Why Choose Autoflower Seeds?

• No light-schedule change needed — flowering starts automatically as the plant matures, whether grown under 18, 20, or even 24 hours of light.
• Faster seed-to-harvest time — most autoflowers complete their full life cycle in around 8–12 weeks from seed, often allowing multiple harvests per season.
• Compact size — many autoflower strains stay smaller than their photoperiod counterparts, suiting limited indoor space, grow tents, or discreet outdoor gardens.
• Suited to shorter growing seasons — useful for regions where a long photoperiod strain wouldn't finish before cooler autumn weather sets in.

Popular Autoflower Strains

For beginners: White Widow Autoflower, Northern Lights Autoflower, and Critical Mass Autoflower are forgiving, compact classics.

For high THC and flavor: Gelato Autoflower, Gorilla Glue Autoflower, Bruce Banner Autoflower, and Girl Scout Cookies Autoflower.

For bigger yields: XXL autoflowers such as Auto Haze XXL, plus heavy producers like Fat Bastard Autoflower and AK-47 Autoflower.

Indica-leaning and colourful: Purple Kush Autoflower.

From our Quebec line: Quebec Super Skunk Autoflower.

Looking for a milder plant? Our CBD seeds include autoflower options. Want to try several strains at once? See our seed mix packs.

Growing Autoflowers in Canada

Canada's short outdoor season is where autoflowers shine. Because they finish in roughly 8–12 weeks from seed regardless of day length, an autoflower started outdoors after the last spring frost can typically be harvested well before cold, wet autumn weather arrives — something many long-flowering photoperiod strains struggle with. Indoors, their compact size suits tents and small spaces.

Keep training gentle: autoflowers have a fixed life cycle and little time to recover from stress, so low-stress training (LST) is generally a better fit than heavy pruning. After harvest, a slow dry and a proper cure make a big difference to flavor; see drying vs. curing marijuana.

Under Canada’s federal rules, every household is allowed to grow up to four cannabis plants. Our guide to buying cannabis seeds in Canada covers the main provincial differences.

Autoflower vs. Photoperiod Seeds

Autoflowers trade some size and yield for speed and simplicity. If you want larger plants, the ability to veg as long as you like, or to keep mother plants for clones, photoperiod feminized seeds are the better fit. For something in between, our fast version seeds are photoperiod strains bred to finish sooner.

Comparing Autoflower Strains

Browse this collection to compare genetics and strain traits, and choose options that match your setup — whether you're growing indoors, outdoors, or in limited space. Each individual strain page lists specifics such as genetics, THC/CBD content, seed-to-harvest time, plant height, expected yield, flavor profile, and reported effects, so you can compare options before choosing.

Frequently Asked Questions

Are your autoflower seeds feminized? Yes — every autoflower in this collection is feminized, so you can expect female plants.

How long do autoflowers take from seed to harvest? Most finish in around 8–12 weeks from seed. XXL and some sativa-leaning autos can take a little longer; check each strain's page for its timeline.

Do you ship autoflower seeds across Canada? Yes — we ship to every province and territory, including BC, Ontario, Alberta, and the Maritimes, in plain, discreet packaging. See our shipping page for details.

Can I grow autoflowers outdoors in Canada? Yes, where home cultivation is permitted. Their short life cycle makes them well suited to Canadian summers, and a spring planting can often be harvested by late summer.

What's the best autoflower for beginners? White Widow Autoflower and Northern Lights Autoflower are two of the most forgiving choices.

Where can I buy autoflower seeds in Canada? You can order autoflower seeds online from Montreal Cannabis Seeds and receive them anywhere in Canada. We ship across Canada by Canada Post standard ($10, 4 to 11 business days, no tracking) or courier express ($25, 2 to 4 business days, with tracking), and to the United States by express ($25, 2 to 3 days, with tracking). Express shipping is free on orders over $200, and orders placed before 2 p.m. ET ship the same day. Everything arrives in plain packaging.

Is there a guarantee on autoflower seeds? Our germination guarantee covers 80% germination for 90 days after purchase. If your seeds fall short, we replace them. Orders that arrive damaged, wrong or incomplete, or never arrive, are covered by our 100% shipping guarantee: we replace them or send a new order.

Legal Disclaimer

Cannabis laws vary by jurisdiction. It is the buyer's responsibility to know and follow all local, provincial/state, and federal laws. These products are intended for adult customers (18+ or as required by law) where permitted. We do not encourage or promote any illegal activity.

Guides for Canadian Growers

Looking for seeds that suit your space and your season? These guides answer the questions growers ask most:

• Cannabis seeds for beginners: how to choose your first seeds.
• Your first cannabis garden: a step-by-step beginner guide.
• Growing cannabis in tight spaces: tents, LEDs and micro-grows for apartments and balconies.
• Growing cannabis outdoors: planting, care and harvest.
• Growing cannabis in Canada 101: indoor and outdoor basics.

Autoflower and fast-version seeds generally finish sooner than standard photoperiod seeds, which can help in short Canadian seasons. Results depend on genetics, climate and care. Each product page lists typical flowering time, height and yield.

Related guide: Best autoflower seeds in Canada: top picks for 2026.