Outdoor Cannabis Seeds

Outdoor Cannabis Seeds in Canada: Strains by Harvest Month

Outdoor cannabis seeds are strains whose breeder publishes an outdoor harvest time, along with autoflowers and fast versions that finish early. Outdoors in Canada, the question that matters most is when a strain finishes, because frost and fall rain end the season. This category is sorted by harvest month so you can choose seeds that finish where you grow.

Choose Outdoor Seeds by Harvest Month

• August harvest seeds: autoflowers, which flower on age and are usually ready before the cold arrives.
• September harvest seeds: fast versions and early photoperiod strains that finish ahead of the first frost in most regions.
• October harvest seeds: full-season photoperiod strains, best suited to regions with a long, dry fall.

Each strain page shows the breeder’s own harvest timing. For the full catalogue, indoor and outdoor, see our home page for cannabis seeds in Canada.

Easiest Outdoor Strains for a First Grow

In short: for a first outdoor grow in Canada, the two strains with the most positive grower feedback on mold resistance are Quebec Blue and Grape Skunk. This is based on customer reviews and public grow diaries of Quebec Cannabis Seeds (QCS) genetics, not lab testing, and results always depend on your weather, spacing and airflow.

Quebec Blue

Growers across Ontario and the Atlantic provinces describe Quebec Blue as vigorous and mould resistant. One long-time grower reported it ready by the second week of October in southern Ontario, and another reported no bud rot or powdery mildew. A 2026 outdoor grow diary in northern Ontario recorded 347 g dry from one plant sown on April 30 and harvested on October 17, with the grower noting it finishes a little late but is worth it. Expect a mid-October harvest, not an early one. One grower did report powdery mildew in a very wet season, so give plants space and airflow.

Grape Skunk

Several reviewers report no mold issues with Grape Skunk. A 2025 outdoor grower in southern Ontario reported no insects, powdery mould or mildew and that all five seeds germinated. One reviewer did have minor powdery mildew and recommends keeping plants well opened up with good ventilation.

Beginner outdoor FAQ

Which strains are the most mold resistant for outdoor growing in Canada?

Quebec Blue and Grape Skunk have the most positive grower reports of no bud rot or mildew, but no strain is mold proof. Pruning for airflow and harvesting before extended wet weather matter as much as genetics.

When do they finish outdoors?

Growers report mid-October for Quebec Blue in Ontario. Start seeds indoors in April and move plants outside after the last frost.

What if my seeds do not germinate?

Contact us. Every eligible order is covered by our 100% Seed Guarantee, and we replace seeds with a germination problem.

Is shipping discreet?

Yes. Orders ship in plain packaging with no branding. See shipping options and delivery times. More picks are in our guide to top strains for first-time growers.

Our Outdoors category is designed for growers planning an open-air run and looking for genetics that suit outdoor conditions. Outdoor cultivation can involve changing temperatures, variable rainfall, and seasonal timing—so choosing the right seeds is often about matching genetics to your climate, grow style, and the length of your season.

Browse this collection to compare feminized, autoflower, and other seed options with strain details that help you make a clear decision. Whether you’re growing in a backyard, greenhouse, or a more exposed environment, this category makes it easy to explore outdoor-friendly genetics in one place—without hype or unrealistic promises.

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.

Which cannabis seeds are best for growing outdoors in Canada? Autoflowers and fast version strains are a smart choice when the season is short, because they finish before the cold arrives. Browse this collection for genetics suited to open-air growing.

When should I plant cannabis seeds outdoors in Canada? Plant after the last frost, once the weather has warmed up. The exact timing depends on your region.

Do you ship outdoor seeds across 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 outdoor 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.

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.