October

October Harvest Cannabis Seeds

These late-season strains finish outdoors in October, giving plants extra weeks in the ground to grow larger and fill out. Most of the October strains have been picked for cold and mold resistance.

Why choose a late-season strain

A longer season means more time to grow. Late-finishing strains often reach a bigger final size and produce heavier harvests than early varieties, and many of them come from genetics that need the full season to reach their potential. If you have a greenhouse, a sheltered spot, or you're growing somewhere with a mild fall, these strains let you take advantage of every week available.

What October growing requires

In the Montreal area, first frost usually arrives in early to mid-October, and fall brings cold nights, rain, and damp air. That combination is the main challenge for late-season plants, because dense flowers hold moisture and can develop bud rot. Late strains are best suited to growers who can offer some protection, such as a greenhouse, a covered patio, or a hoop tunnel, or who are growing in milder regions farther south. 

Mold resistance matters more in October than in any other month. Good airflow, spacing between plants, and keeping flowers dry after rain all help.

Choosing between September and October strains

If you're growing outdoors without protection around Montreal, our September Harvest Seeds are the safer choice, since they finish before frost. October strains make sense when you have cover, a longer local season, or you're willing to trade some weather risk for larger plants. Each product page lists the expected harvest window so you can match a strain to your setup.

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.

Frequently asked questions

When exactly will these strains be ready?
Most finish in early to late October, depending on the strain, your location, and the weather. Check each product page for its expected harvest window.

Will frost kill my plants?
A light frost usually damages leaves without destroying the plant, but a hard freeze can end the grow. Covering plants overnight during an early cold snap often buys enough time to finish.

Are these strains good for greenhouses?
Yes. A greenhouse or tunnel keeps rain off the flowers and holds warmth into the fall, which is why late strains do well under cover in this climate.

Can I grow these indoors instead?
Yes. Indoors, they flower when you switch to 12 hours of light and 12 of darkness, with a flowering time of about 7 weeks, and the outdoor weather risk disappears entirely.

Which is better, September or October strains?
Neither is better overall. September strains are more reliable outdoors in cooler regions, while October strains can grow larger when conditions allow.

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.