Autoflowering cannabis seeds are ruderalis-crossed genetics that flower on age rather than light cycle — meaning you buy the seed, pop it in soil, and harvest in 8 to 12 weeks without touching a timer. Azarius stocks over 70 autoflower strains from our own in-house breeding programme plus Humboldt Seed Organization, Paradise Seeds, Pure Instinto, FastBuds and Philosopher Seeds. Shop sativa, indica and hybrid autos in 1, 3, 5 or 10-seed packs — we've been selling cannabis seeds from Amsterdam since 1999.
Buy Autoflowering Seeds — The Azarius Buying Guide
Autoflowers are the easiest way to grow cannabis at home. No light-schedule juggling, no photoperiod switch, no fussing with 12/12 timing. You plant the seed, keep a steady 18/6 or even 20/4 light cycle throughout, and the plant flowers when it's ready. If you're new to growing, start here — honestly, we'd put a first-timer on an autoflower every time over a photoperiod strain.
Quick Chooser — Find Your Auto by Goal
| What you want | Start with | Why |
|---|---|---|
| Fastest harvest | Trainwreck Auto, Pineapple Express Auto | 6–8 weeks seed to harvest |
| First-time grower | Northern Lights Auto, Blueberry Auto | Compact, forgiving, beginner-proof |
| Highest THC | Godfather OG Auto, Black Widow Auto | 25–26% THC ceiling |
| Daytime sativa energy | Jack Herer Auto, Cinderella 99 Auto, Hawaiian Snow Auto | Genuine cerebral highs, not sleepy hybrids |
| Heavy indica knockout | Bubba Kush Auto, Granddaddy Purple Auto, Skywalker OG Auto | 80%+ indica, body-focused |
| Dessert-sweet flavour | Wedding Cake Auto, Cereal Milk Auto, Gelato Auto | Vanilla, fruit, cookie terps |
| Diesel/fuel lovers | Sour Diesel Auto, Chemdawg Auto, Bruce Banner Auto | Classic NY fuel profile |
| Balanced 1:1 CBD:THC | Lafanta Light Auto | Therapeutic, no heavy psychoactive load |
Choosing by goal beats choosing by name. Most buyers walk in wanting "the strongest one" — but if you're after a daytime smoke, 25% THC indica will put you on the sofa by 11am. Pick the effect first, genetics second.
What We Carry
- Azarius in-house autos — our own breeding line, over 40 strains from Acapulco Gold Auto and Blueberry Auto to Wedding Cake Auto and Watermelon Gelato Auto. Feminised, 1/3/5/10-seed packs.
- Pure Instinto (Spain) — US-grade genetics in autoflower format: MAC², MAK OG, SherBacio OG, Tri-Whip Kush, Whipped Runtz, Alien Snack. 22–26% THC, 8-week finishers.
- Humboldt Seed Organization — Californian breeder heavyweights: Chem-Bomb, Chocolate Mint OG, Pineapple Chem, Mango OG, OGKZ, OG Kush Auto.
- Paradise Seeds — Dutch classics reworked for auto: Pandora, Vertigo, Red Velvet, plus the Auto Collection Pack 2 three-strain sampler.
- FastBuds — Super Boof Auto, Leafly's 2024 Strain of the Year in autoflower form.
- Philosopher Seeds — Black Bomb Auto for SOG and compact-space growers.
- Light Buds — Lafanta Light Auto, the 1:1 CBD:THC option for buyers who want flower without a heavy head.
- Free autoflowering seeds — bonus seeds added to every order. Pick your pack size at checkout.
How to Choose Your Autoflower Seeds
Beginner: Get Northern Lights Auto, Blueberry Auto or Pineapple Express Auto. Compact plants, forgiving genetics, 7–9 week turnaround, and they don't punish first-time mistakes. Buy a 3-seed pack, germinate two, keep one in reserve.
Intermediate: Shop the flavour-forward tier — Gelato Auto, Wedding Cake Auto, Sour Diesel Auto, Purple Punch Auto. These reward better feeding schedules and training (LST works on autos, just don't top them late). 18–22% THC range, serious terpene profiles, 8–10 weeks.
Advanced: Order the heavy-hitters — Godfather OG Auto (25–26% THC), Black Widow Auto (up to 26%), Apple Fritter Auto (22–25%), Bruce Banner Auto (21–26%). Or go boutique with Pure Instinto's MAC² and SherBacio OG. Bigger plants, bigger yields, more demanding nutrient schedules.
When in doubt, buy Northern Lights Auto. It's been the beginner's autoflower for 20 years for a reason.
Indoor vs Outdoor Autoflowers
Most autos in our catalogue do both, but a few excel at one. Indoors under an 18/6 schedule, expect 400–600 g/m² from strains like Do-Si-Dos Auto, Bruce Banner Auto and Wedding Cake Auto. Outdoors in a Dutch or Mediterranean summer, compact autos like Blueberry Auto and Northern Lights Auto finish on a balcony in 9 weeks — and because they're not light-dependent, you can run two harvests between May and October.
Honest limitation: autoflowers don't clone well, and they don't recover from heavy mistakes the way photoperiods do. If you accidentally overfeed in week 3, you're living with that damage. Gentle nutrients, steady watering, don't overthink it.
Frequently Asked Questions
What are autoflowering cannabis seeds?
Autoflowering seeds are cannabis genetics crossed with Cannabis ruderalis, a subspecies that flowers based on age rather than light cycle. Plant the seed, run an 18/6 or 20/4 light schedule from start to finish, and the plant flowers automatically at around week 3–4. Most autos finish in 8–12 weeks from germination.
Are autoflower seeds good for beginners?
Yes — they're the easiest way to start growing. No light-cycle switch, compact plants that fit in small tents or balconies, and a 7–10 week turnaround. We'd point any first-timer at Northern Lights Auto, Blueberry Auto or Pineapple Express Auto. Shop a 3-seed pack, germinate two, keep one in reserve.
What's the fastest autoflower seed you sell?
Trainwreck Auto finishes flowering in about 6 weeks, making it the fastest autoflower in our catalogue. Pineapple Express Auto runs a close second at 7–8 weeks seed to harvest. Both stay compact and are beginner-friendly despite the speed.
What's the strongest autoflower seed for THC?
Godfather OG Auto and Black Widow Auto both cap at 25–26% THC — the highest in our autoflower range. Apple Fritter Auto (22–25%), Bruce Banner Auto (21–26%) and Pure Instinto's SherBacio OG (26%) sit in the same tier. Order these if potency is the priority, not flavour.
Do autoflower seeds yield less than photoperiod seeds?
Per plant, yes — autoflowers are smaller and have shorter veg time. Per square metre over a year, no. You can run 3–4 autoflower cycles in the time it takes one photoperiod crop to finish, and yields of 400–600 g/m² from strains like Do-Si-Dos Auto and Bruce Banner Auto are genuinely competitive.
Can I grow autoflower seeds outdoors?
Yes, and that's one of their strengths. Because autos flower on age, not daylight hours, you're not tied to the summer solstice. Plant between April and August in Northern Europe and you'll harvest in 9–11 weeks. Blueberry Auto, Northern Lights Auto and Purple Haze Auto are climate-tough picks for balconies and gardens.
Last updated: April 2026