Autoflower Cannabis Seeds - Seed to Harvest in 10 Weeks
Shop 800+ premium autoflower cannabis seeds from 80+ verified breeders. Get automatic flowering genetics that don't need light schedule changes. Perfect for beginners, stealth grows, and perpetual harvests. From seed to harvest in 8-12 weeks guaranteed.
⚡ 8-12 Week Harvests
🌱 No Light Schedule Changes
📏 Compact Size (2-4ft)
👶 Beginner Friendly
🔄 4+ Harvests Per Year
What Are Autoflower Cannabis Seeds?
Autoflower cannabis seeds automatically switch from vegetative growth to flowering based on age, not light cycles. Created by crossing cannabis with Cannabis ruderalis genetics, these seeds flower regardless of light schedule - even under 24 hours of light.
Real talk - autoflowers used to suck. Low potency, tiny yields, weird taste. But modern autos? We're seeing 25%+ THC and 4-6 ounce plants. The game has completely changed.
- Automatic flowering - No 12/12 light switch needed
- Fast harvest - 8-12 weeks from seed to harvest
- Compact size - Perfect for small spaces (2-4 feet tall)
- Multiple harvests - 4-5 crops per year possible
- Beginner proof - Hardest part (light timing) eliminated
- Stealth growing - Small, fast, and discreet
Autoflower vs Photoperiod Seeds: The Complete Breakdown
| Feature |
Autoflower Seeds |
Photoperiod Seeds |
| Time to Harvest |
✅ 8-12 weeks total |
❌ 4-6 months minimum |
| Light Schedule |
✅ 18-24 hours throughout |
❌ Must switch to 12/12 |
| Plant Size |
2-4 feet typical |
4-10+ feet typical |
| Yield Per Plant |
1-6 ounces average |
4-16+ ounces average |
| Growing Difficulty |
✅ Beginner friendly |
Intermediate required |
| Training Tolerance |
❌ Limited (LST only) |
✅ All techniques work |
| Cloning Ability |
❌ Not recommended |
✅ Unlimited clones |
| Outdoor Flexibility |
✅ Plant anytime |
❌ Season dependent |
| Electricity Cost |
Higher (more light hours) |
Lower (12/12 in flower) |
| THC Potential |
20-25% (modern strains) |
20-35% possible |
Why Autoflower Seeds Are Taking Over in 2025
⚡ Speed Kills
Harvest every 10 weeks instead of waiting 4-6 months. That's 5 harvests per year vs 2. Do the math - speed wins.
🏠 Perfect for Small Spaces
2-3 feet tall means closets, cabinets, and stealth grows are possible. No more dedicating entire rooms.
💡 No Light Timer Needed
Run 18-24 hours of light the entire grow. No timers, no light leaks, no hermies from interrupted dark periods.
👶 Truly Beginner Proof
Can't mess up the light schedule if there isn't one. Water, feed, wait. It's literally that simple.
☀️ Outdoor Freedom
Plant in May, June, July - doesn't matter. They'll flower when ready, not when the sun tells them.
🔄 Perpetual Harvests
Start new seeds every 3 weeks for continuous harvests. One tent, endless supply.
How to Grow Autoflower Cannabis Seeds (The Right Way)
💡 Bean's #1 Auto Rule: Start in final containers. Autoflowers hate transplant shock. That week of recovery? That's 10% of their entire life wasted. Start in 3-5 gallon pots and leave them alone.
Week 0-1: Germination
Paper towel or straight to soil. Plant directly in final container - 3 gallons minimum, 5 gallons optimal. Autos don't have time for transplant recovery.
Weeks 1-3: Seedling Stage
18-24 hours of light from day one. Start nutrients at 1/4 strength. Don't overwater - their #1 killer in this stage.
Weeks 3-5: Vegetative Growth
Explosive growth phase. This is your only training window - LST only, no topping. Feed full strength, watch them double in size.
Weeks 5-6: Pre-Flower
Pistils appear automatically. Switch to bloom nutrients. Keep the same light schedule - 18+ hours.
Weeks 6-10: Flowering
Buds stack and swell. Maintain 18-24 hour light schedule. Start flush at week 9 for 10-week strains.
Weeks 10-12: Harvest
Check trichomes - cloudy with 10-20% amber. Most autos finish 70-85 days from seed.
Critical Autoflower Growing Tips
⚠️ Never Top Autoflowers: They don't have recovery time. Topping sets them back 7-10 days, which is 10% of their life. LST only - bend don't break.
Light Schedule Options:
- 18/6: Good balance of growth and electricity savings
- 20/4: Maximum growth, slight rest period
- 24/0: Fastest growth but higher electric bill
Container Size Matters:
- 3 gallons: Minimum for decent yields (1-2 oz)
- 5 gallons: Optimal for most autos (2-4 oz)
- 7 gallons: For XXL autos only (4-6 oz)
Nutrient Strategy:
- Week 1-2: Plain water or 1/4 strength
- Week 3-5: Gradually increase to full veg nutes
- Week 5-9: Full bloom nutrients
- Week 9-10: Flush with plain water
Best Autoflower Cannabis Seeds 2025 - Speed Demons
These autoflowers go from seed to harvest faster than you can say "light schedule." Perfect for impatient growers.
View Best of 2025 Autoflower Strains →
Advanced Autoflower Growing Techniques
Maximizing Autoflower Yields
Yeah, autos yield less than photos. But here's how to close that gap:
✅ The 5-Gallon Rule: Every gallon of soil = potential 1 ounce of bud. 5-gallon pots consistently produce 3-5 ounce plants. Don't go smaller unless space demands it.
Light Intensity Matters More Than Duration:
- Minimum 300W LED for 2x2 space
- 600W LED for 4x4 optimal
- Keep lights 18-24" in veg, 12-18" in flower
- More light = denser buds (to a point)
LST (Low Stress Training) for Autos:
- Start at week 3 when plant has 4-5 nodes
- Gently bend main stem to 90 degrees
- Tie down branches to create even canopy
- Stop training once flowering begins
- Can increase yields 20-40%
Common Autoflower Mistakes to Avoid
- Overwatering: #1 killer - let soil dry between waterings
- Transplanting: Start in final container always
- Overfeeding: Autos need less food than photos
- Wrong pot size: Too small limits yield dramatically
- High stress training: No topping, FIMing, or super cropping
- Poor genetics: Cheap autos still suck - buy quality
Autoflower Cannabis Seeds FAQ
❓ "Are autoflowers less potent than photoperiods?"
Not anymore. Modern autos hit 25%+ THC regularly. FastBuds, Mephisto, and Night Owl have autos testing higher than many photoperiods. The ruderalis genetics are so diluted now that potency isn't compromised.
❓ "Can I clone autoflowers?"
Technically yes, but it's pointless. Clones follow the mother's timeline, so they'll flower at the same age regardless of size. You'll get tiny plants with tiny yields. Just pop new seeds.
❓ "What's the best light schedule for autos?"
18/6 gives the best balance of growth and cost. 20/4 produces slightly bigger yields. 24/0 works but increases stress and electric bills. I run 20/4 and consistently pull 3-4 ounces per plant.
❓ "Why are my autoflowers so small?"
Usually pot size. Autos in solo cups yield grams. 1-gallon pots yield half ounces. 3-gallon minimum for decent yields, 5-gallon for best results. Also check your light - weak light = tiny plants.
❓ "Can autoflowers handle outdoor growing?"
Hell yes! Plant after last frost, harvest 10 weeks later. Multiple harvests per season possible. They're actually more resistant to pests and mold due to their fast finish. Plus, smaller size means better stealth.
❓ "Do autoflowers yield enough to be worth it?"
Do the math: 3 ounces per auto x 5 harvests per year = 15 ounces. One photoperiod might yield 8 ounces x 2 harvests = 16 ounces. Nearly identical yearly yields, but autos give you fresh harvests every 10 weeks instead of every 6 months.
Autoflower vs Photoperiod: The Real Cost Analysis
Let's talk money because that's what matters:
Autoflower Annual Costs (5 harvests):
- Seeds: $60 (5 packs @ $12 each)
- Electricity (20/4): $450/year
- Nutrients: $150
- Total: $660/year
- Yield: 15 ounces
- Cost per ounce: $44
Photoperiod Annual Costs (2 harvests):
- Seeds/Clones: $20
- Electricity (18/6 + 12/12): $350/year
- Nutrients: $100
- Total: $470/year
- Yield: 16 ounces
- Cost per ounce: $29
Photoperiods are cheaper per ounce, but autoflowers give you fresh harvests every 10 weeks. What's that variety worth to you?
Best Autoflowers for Specific Situations
🏠 Best for Stealth/Small Spaces
- Lowryder Auto: OG stealth strain, 12-16 inches tall
- Northern Lights Auto: Low odor, compact, reliable
- White Widow Auto: Classic strain, stays under 3 feet
☀️ Best for Outdoor Growing
- Gorilla Glue Auto: Pest resistant, handles weather
- Blue Dream Auto: Mold resistant, vigorous growth
- Critical Auto: Fast finish beats fall rains
💰 Best Yielding Autoflowers
- Big Bud Auto: 500-600g/m² monsters
- Green Crack Auto: XXL yields, 4-6 ounces per plant
- Amnesia Haze Auto: Sativa yields in auto form
🚀 Highest THC Autoflowers
- Gorilla Cookies Auto: 27% THC verified
- Bruce Banner Auto: 25%+ consistently
- Wedding Glue Auto: 26% THC lab tested
The Truth About Modern Autoflowers
Look, I was an auto hater for years. Why grow tiny plants with weak potency? But here's what changed my mind:
The 2025 Reality: Modern autos are 90% photoperiod genetics, 10% ruderalis. Just enough auto gene to trigger flowering, not enough to ruin potency or yield. We're seeing 25% THC, 5-ounce plants, and terp profiles that rival the best photoperiods.
When Autoflowers Make Sense:
- Limited grow space (closets, cabinets, tents under 5 feet)
- Want multiple strains without multiple tents
- Outdoor growing in short season climates
- Perpetual harvest setups
- First-time growers learning basics
- Guerrilla growing (plant and forget)
When to Stick with Photoperiods:
- Commercial operations maximizing yield
- Mother plant/cloning operations
- Breeding projects
- When you want 1-pound plants
- SCROG or heavy training techniques
Why Buy Autoflower Seeds from Seeds Here Now
Every seed bank sells autos now. But most are selling old genetics or white-label bulk. Here's our difference:
🏆 Quality Over Quantity: We've tested hundreds of autoflower strains. Only the ones that actually deliver make it to our catalog. No 15% THC "autos" from 2010.
What Sets Our Autoflowers Apart:
- Latest Genetics: FastBuds, Mephisto, Night Owl - the brands pushing auto boundaries
- Verified THC Levels: Lab tests or it didn't happen
- True Harvest Times: If we say 9 weeks, it's 9 weeks
- Germination Guarantee: They all pop or we replace
- Real Grow Support: We've actually grown these strains
- Honest Descriptions: We'll tell you if an auto stays small
Top Autoflower Breeders We Trust
FastBuds • Mephisto Genetics • Night Owl Seeds • Barney's Farm • Dutch Passion • Sweet Seeds • Dinafem • RQS • Seedsman • 420 FastBuds • Atlas Seed • Twenty20 Mendocino • and more...
⚡ Ready for 10-Week Harvests?
Join thousands of growers harvesting every 10 weeks with premium autoflower genetics. From compact closet grows to perpetual harvest operations, we've got your seeds.
Shop 800+ Autoflower Strains →
Need help choosing? Email [email protected] - we've grown most of these.
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