The fastest cannabis seeds in Canada finish flowering in 7 to 8 weeks, and autoflower versions go seed to harvest in as little as 8 to 10 weeks total.
Last updated: August 2026 · Picks drawn from real sales and review data in our catalogue.
When September rain and early frost set your deadline, flowering speed is the spec that matters most. These eight finish soonest in our catalogue, based on the timelines published on each strain page.
The 8 fastest finishers for 2026
1. Northern Lights Feminized Marijuana Seeds
THC up to 20% · flowers in about 8 weeks · from $65 · rated 5.0/5 (6 reviews)
Among the quickest in the store, chosen for regions where autumn arrives early.
2. Auto Solomatic CBD (1:20) Marijuana Seeds
THC up to 1% · flowers in about 8 weeks · from $35 · rated 4.0/5 (4 reviews)
Among the quickest in the store, chosen for regions where autumn arrives early.
3. 3 Kings Autoflower Marijuana Seeds
THC up to 16% · flowers in about 8 weeks · from $65 · rated 5.0/5 (1 review)
Among the quickest in the store, chosen for regions where autumn arrives early.
4. Purple Dream Feminized Fast Version Marijuana Seeds
THC up to 24% · flowers in about 8 weeks · from $65
Among the quickest in the store, chosen for regions where autumn arrives early.
5. Afghan Chocolope Feminized Fast Version Marijuana Seeds
THC up to 17% · flowers in about 8 weeks · from $65
Among the quickest in the store, chosen for regions where autumn arrives early.
6. Big Bud Fast Version Feminized Marijuana Seeds
THC up to 18% · from $65 · rated 5.0/5 (1 review)
Among the quickest in the store, chosen for regions where autumn arrives early.
7. Auto CBD White Widow (1:1) Marijuana Seeds
THC up to 8% · flowers in about 8 weeks · from $35 · rated 4.5/5 (2 reviews)
Among the quickest in the store, chosen for regions where autumn arrives early.
8. Blue Diesel Autoflowering Marijuana Seeds
THC up to 16% · flowers in about 8 weeks · from $65
Among the quickest in the store, chosen for regions where autumn arrives early.
Quick comparison
| # | Strain | From | THC | Flowering | Rating |
|---|---|---|---|---|---|
| 1 | Northern Lights Feminized Marijuana Seeds | $65 | 20% | 8 wks | 5.0/5 |
| 2 | Auto Solomatic CBD (1:20) Marijuana Seeds | $35 | 1% | 8 wks | 4.0/5 |
| 3 | 3 Kings Autoflower Marijuana Seeds | $65 | 16% | 8 wks | 5.0/5 |
| 4 | Purple Dream Feminized Fast Version Marijuana Seeds | $65 | 24% | 8 wks | – |
| 5 | Afghan Chocolope Feminized Fast Version Marijuana Seeds | $65 | 17% | 8 wks | – |
| 6 | Big Bud Fast Version Feminized Marijuana Seeds | $65 | 18% | – | 5.0/5 |
| 7 | Auto CBD White Widow (1:1) Marijuana Seeds | $35 | 8% | 8 wks | 4.5/5 |
| 8 | Blue Diesel Autoflowering Marijuana Seeds | $65 | 16% | 8 wks | – |
How we chose
Every pick comes from our own catalogue data: real sales volumes, verified customer reviews and the strain specs published on each product page. No sponsored placements. Prices shown are the smallest pack at time of writing and every order carries our germination guarantee, with buy one get one free on all 10 and 25 seed packs.
Frequently asked questions
What counts as a fast flowering strain?
Anything finishing flowering in 8 weeks or less. Indica-dominant genetics and fast version crosses lead this range.
Fast version or autoflower for speed?
Autoflowers win on total calendar time. Fast versions win on yield: photoperiod-sized harvests arriving one to two weeks early.
When do fast strains come down outdoors in Canada?
Typically early to mid September, comfortably before hard frost in most provinces.