Fast Flowering Cannabis Seeds USA — Quick Harvest Strains
Fast flowering cannabis seeds combine photoperiod genetics with accelerated flowering times, typically finishing 1-2 weeks earlier than standard strains. Ideal for outdoor growers in northern US states who need to harvest before frost, and indoor growers who want faster turnaround between cycles. These strains maintain the potency and yield of standard photoperiod genetics while shaving critical weeks off the flowering timeline.
209 strains available
Fast Flowering Seeds — Browse All Strains
Fruity Widow Auto
Buy Fruity Widow Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
B-52 Auto
Buy B-52 Auto cannabis seeds online in the USA. Indica strain with 10% THC. Effects: Euphoric, Creative. Discreet shipping to all 50 states with germination guarantee.
El Chapo OG Auto
Buy El Chapo OG Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Focused, Calm. Discreet shipping to all 50 states with germination guarantee.
Motavation Auto
Buy Motavation Auto cannabis seeds online in the USA. Indica strain with 15% THC. Effects: Euphoric, Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
Electric Blue Auto
Buy Electric Blue Auto cannabis seeds online in the USA. Indica strain with 18% THC. Effects: Euphoric, Energetic. Discreet shipping to all 50 states with germination guarantee.
Purple Chemdawg Auto
Buy Purple Chemdawg Auto cannabis seeds online in the USA. Indica strain with 17% THC. Effects: Euphoric, Focused, Energetic. Discreet shipping to all 50 states with germination guarantee.
Lemon Daddy Auto
Buy Lemon Daddy Auto cannabis seeds online in the USA. Indica strain with 24% THC. Effects: Euphoric, Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
9 Pound Hammer Auto
Buy 9 Pound Hammer Auto cannabis seeds online in the USA. Indica strain with 23% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Pinkman Goo Auto
Buy Pinkman Goo Auto cannabis seeds online in the USA. Indica strain with 18% THC. Effects: Calming, Relaxed, Uplifted. Discreet shipping to all 50 states with germination guarantee.
Dark Side of the Moon Auto
Buy Dark Side of the Moon Auto cannabis seeds online in the USA. Indica strain with 16% THC. Effects: Focused, Energetic, Calm. Discreet shipping to all 50 states with germination guarantee.
West OG Auto
Buy West OG Auto cannabis seeds online in the USA. Indica strain with 22% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Crown OG Auto
Buy Crown OG Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Euphoric, Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
Hyper Critical Auto
Buy Hyper Critical Auto cannabis seeds online in the USA. Indica strain with 18% THC. Effects: Euphoric, Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
Fruit Auto
Buy Fruit Auto cannabis seeds online in the USA. Indica strain with 10% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Ayahuasca Purple Auto
Buy Ayahuasca Purple Auto cannabis seeds online in the USA. Indica strain with 21% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Death Bubba Auto
Buy Death Bubba Auto cannabis seeds online in the USA. Indica strain with 25% THC. Effects: Euphoric, Relaxed, Uplifted. Discreet shipping to all 50 states with germination guarantee.
Papaya Cookies Auto
Buy Papaya Cookies Auto cannabis seeds online in the USA. Indica strain with 24% THC. Effects: Creative, Calm. Discreet shipping to all 50 states with germination guarantee.
Strawberry Cheesecake Auto
Buy Strawberry Cheesecake Auto cannabis seeds online in the USA. Indica strain with 22% THC. Effects: Happy, Relaxed, Uplifted. Discreet shipping to all 50 states with germination guarantee.
American Kush Auto
Buy American Kush Auto cannabis seeds online in the USA. Indica strain with 18% THC. Effects: Uplifted, Focused, Calm. Discreet shipping to all 50 states with germination guarantee.
Afghani Bullrider Auto
Buy Afghani Bullrider Auto cannabis seeds online in the USA. Indica strain with 16% THC. Effects: Relaxed, Sleepy, Happy. Discreet shipping to all 50 states with germination guarantee.
Alien Dawg Auto
Buy Alien Dawg Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Focused, Calm. Discreet shipping to all 50 states with germination guarantee.
Cataract Kush Auto
Buy Cataract Kush Auto cannabis seeds online in the USA. Indica strain with 20% THC. Effects: Euphoric, Happy, Relaxed. Discreet shipping to all 50 states with germination guarantee.
Tigermelon Auto
Buy Tigermelon Auto cannabis seeds online in the USA. Indica strain with 27% THC. Effects: Relaxed, Euphoric. Discreet shipping to all 50 states with germination guarantee.
Puna Budder Auto
Buy Puna Budder Auto cannabis seeds online in the USA. Indica strain with 18% THC. Effects: Relaxed, Euphoric, Creative. Discreet shipping to all 50 states with germination guarantee.
What Are Fast Flowering Cannabis Seeds?
Fast flowering seeds are photoperiod strains bred to complete their flowering cycle faster than standard versions. They achieve this through selective breeding with fast-finishing genetics or by incorporating a small percentage of ruderalis genes without making them fully autoflowering. The result is a plant that still requires a 12/12 light cycle to flower but finishes 7-14 days sooner than the original strain — a critical advantage for outdoor growers in regions with early fall frost.
Best Fast Flowering Strains
Our fast-flowering collection includes Quick One (8 weeks total from seed), Fast Buds Critical (6 weeks flower), Speed Haze (8 weeks flower instead of 12), and Fast Gorilla Glue (7 weeks flower). These strains deliver comparable potency and yield to their standard counterparts while finishing significantly faster. Indoor growers can fit an extra harvest cycle per year with fast-flowering genetics.
How to Choose Fast Flowering Seeds
Consider whether you need a full photoperiod plant (with veg control) that flowers quickly, or if a standard autoflower would serve your needs. Fast-flowering photoperiod strains give you the advantage of controlling plant size during veg while still getting a faster harvest. Compare flowering times between fast and standard versions of the same strain. For outdoor growers, calculate whether the fast version will finish before your local first frost date.
Lab-Verified THC & Terpene Data
Fast-flowering genetics complete flowering in 6-8 weeks instead of the 9-11 weeks typical of standard photoperiod strains. Lab data shows that fast-flowering strains achieve 90-95 percent of the potency of their standard counterparts despite the shorter flower window — modern breeding has effectively closed the speed-vs-potency gap.
| Strain | Total THC | CBD |
|---|---|---|
| Northern Lights | 21.1% | 0.10% |
| Bubba Kush | 22.8% | 0.10% |
| Critical | 21.4% | 0.13% |
| Hindu Kush | 20.5% | 0.12% |
| Quick One | 14.8% | 0.10% |
| Speed Haze | 19.7% | 0.06% |
| Power Plant | 23.1% | 0.06% |
| Master Kush | 21.4% | 0.08% |
| Top 44 | 17.9% | 0.11% |
| Sleestack | 19.2% | 0.08% |
Tests use HPLC analysis. Fast-flowering strains tested at week 7-8 of flower (vs week 9-10 for standard versions). The 1-2 week time savings is critical for outdoor growers in regions with first-frost dates in late September or early October.
Real Grower Yield Reports
Fast-flowering harvest reports — many submitted by growers in cold-climate northern states (Maine, Minnesota, Wisconsin, Michigan, Vermont) where standard photoperiod strains often fail to finish before fall frost destroys the crop.
| Strain | Yield (g/plant) |
|---|---|
| Northern Lights | 360g |
| Bubba Kush | 425g |
| Critical | 545g |
| Hindu Kush | 580g |
| Quick One | 110g |
| Speed Haze | 510g |
| Power Plant | 720g |
| Master Kush | 380g |
| Top 44 | 245g |
| Sleestack | 420g |
Frequently Asked Questions
How fast do fast flowering seeds finish?
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