Fast flowering cannabis seeds are photoperiod strains bred to finish in 6–8 weeks of bloom instead of the usual 9–10 — shaving weeks off harvest without the size trade-off of autos. Good if you want full-size plants, proper training control, and the option to take clones, but don't fancy waiting until November for outdoor harvest. Azarius has been shipping seeds from our Amsterdam shop since 1999 — buy fast flowering seeds from a curated selection below.
Fast flowering cannabis seeds are photoperiod strains bred to finish in 6–8 weeks of bloom instead of the usual 9–10 — shaving weeks off harvest without the size trade-off of autos. Good if you want full-size plants, proper training control, and the option to take clones, but don't fancy waiting until November for outdoor harvest. Azarius has been shipping seeds from our Amsterdam shop since 1999 — buy fast flowering seeds from a curated selection below.
Fast flowering seeds are feminised photoperiod genetics crossed with a fast-blooming parent (often a ruderalis-derived line) to compress the flowering window. You still flip the light cycle to 12/12 to trigger bloom, you still take clones if you want, and you still get the yields and potency of a photoperiod plant. You just finish 2–3 weeks sooner.
The obvious use case is outdoor growers in northern Europe who want buds in the jar before the autumn rains roll in. The less obvious one: indoor growers running perpetual cycles who want to squeeze an extra harvest per year out of the same tent.
| Type | Flowering time | Needs 12/12 flip | Good for |
|---|---|---|---|
| Fast flowering photoperiod | 6–8 weeks | Yes | Growers who want full-size plants, cloning, and an early harvest |
| Autoflower | 7–9 weeks seed to harvest | No | First-time growers, stealth setups, no light timer hassle |
| Standard photoperiod | 8–11 weeks flower | Yes | Experienced growers chasing maximum yield and classic cultivars |
If you want auto genetics instead, we also stock Tangerine Dream Auto, Blue Dream Auto, and Green Crack Auto — different category, different grow style.
First-time buyer? Start with Runtz Fast Flowering or Ice Cream Cake. Both are indica-leaning, forgiving, and give you something genuinely impressive for the effort. Three-seed packs are plenty for a first run.
If you're chasing terpene weirdness over raw yield, order Peanut Butter Breath — it's the one we'd pick when we've already got a pantry full of regular flower and want something different. For growers who know what they're doing and want a citrus-forward photoperiod with a longer lineage, buy Tangerine Dream. It's been in the catalogue for years for a reason.
When in doubt: shop the 3-seed pack first, see how she grows in your space, then order the 10-pack once you know the phenotype you want to chase.
Fast flowering seeds are feminised photoperiod strains bred to finish bloom in 6–8 weeks instead of the standard 8–11. You still flip to 12/12 to trigger flowering, unlike autos. The speed comes from crossing elite photoperiod genetics with a fast-blooming parent line.
Autos flower automatically on age, regardless of light schedule, and stay small. Fast flowering photoperiods still need a 12/12 flip, grow to full size, and can be cloned. Autos are simpler; fast flowers give you more yield and control.
Yes — that's the main reason they exist. An 8-week flower window means you can harvest mid-to-late September before the autumn damp sets in and triggers mould. Standard photoperiods often finish too late for safe outdoor growing above 50° latitude.
Usually a touch less, yes. You're trading 2–3 weeks of bulking time for an earlier harvest. Humboldt's fast flowering line still hits 450–600 g/m² indoors, which is competitive with many full-length photoperiods.
They're a solid middle ground. Easier than training a long-flowering sativa, more rewarding than a small auto. If it's your first grow ever, an autoflower is simpler. If you want to learn proper photoperiod technique without waiting forever, buy a fast flowering strain.
Last updated: April 2026
Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.
