Original Auto Amnesia Haze

Original Auto Amnesia Haze Cannabis Seeds by FastBuds

Original Auto Amnesia Haze is an autoflowering cannabis seed that delivers the legendary Amnesia Haze genetics in just 70 days from germination. FastBuds took one of the most notoriously slow-flowering sativas on the planet and gave it a ruderalis backbone, slashing the wait time without gutting the potency or flavour that made the original famous. You get a sativa-dominant auto that can push 650g/m² indoors — numbers that make plenty of photoperiod strains look modest.

Why Original Auto Amnesia Haze Deserves a Spot in Your Grow Room

The original Amnesia Haze is a legend for good reason — towering sativa structure, electric cerebral effects, and a flavour profile that's instantly recognisable. The problem? Flowering times that stretch past 12 weeks on the photoperiod version, sometimes pushing 14. That's a long time to stare at a tent and wait. FastBuds solved this by crossing the original genetics with a carefully selected ruderalis line, compressing the entire lifecycle — seed to chop — into roughly 70 days. That's not a typo. Seventy days.

What makes this auto impressive isn't just the speed. It's that FastBuds didn't sacrifice the things that matter. The sativa dominance is still there in the growth pattern: expect tall, stretchy plants that can hit 150cm if you let them run. The yield ceiling of 650g/m² indoors puts this firmly in the "serious producer" category for an autoflower. And the terpene profile — that signature orange citrus with floral undertones — survived the breeding process intact. On the inhale, the floral notes lead; on the exhale, citrus takes over. It smells like a Haze should smell.

Here's the honest bit: this is not a set-and-forget auto. She stretches hard, and if you're in a small tent — say 60x60cm — you'll want to start training early. LST or topping in the first few weeks keeps the canopy manageable. SOG works brilliantly if you're running multiple plants. Growers who've done a run or two before will get the best out of her. First-timers can absolutely grow her, but a more forgiving auto like a Northern Lights or a Critical might be a gentler introduction to the hobby.

Growing Original Auto Amnesia Haze: What to Expect Week by Week

FastBuds rates this strain as intermediate difficulty, and we'd agree with that. She rewards attention but doesn't punish small mistakes the way some finicky sativas do. Here's a practical breakdown of how to approach the grow.

1. Germination (Days 1–3): Soak seeds in water for 12–24 hours, then transfer to damp paper towels or plant directly into your final pot. Autos don't love transplanting, so starting in the final container — 11L or larger — saves stress on the roots.
2. Seedling stage (Days 3–14): Keep humidity around 65–70% and light intensity moderate. She'll show her first true leaves quickly. No nutrients yet — the seed has enough stored energy.
3. Vegetative growth (Days 14–35): This is where the stretch kicks in. She can gain serious height in this window. If you're planning LST, start bending the main stem around day 18–21 when it's still flexible. Topping works well around the 4th or 5th node. Start feeding at roughly 50% of the recommended dose for your nutrient line and increase gradually.
4. Pre-flower and early bloom (Days 35–50): Pistils appear and the stretch continues for another week or so. Switch to bloom nutrients. Support branches that are leaning — the buds will get heavy.
5. Late flower and ripening (Days 50–70): Bud sites fatten up considerably in the final two weeks. Trichomes shift from clear to milky. Flush with plain water for the last 7–10 days if you're in a mineral-based medium. Outdoor growers in hot climates will see the biggest yields here — the plant absolutely loves direct sun and warmth.
6. Harvest: Check trichomes with a jeweller's loupe. Mostly milky with a few amber heads is the sweet spot for this sativa-leaning variety. Chop, trim, and hang dry at 18–20°C with 55–60% humidity for 7–10 days.

Flavour and Aroma of Original Auto Amnesia Haze

The terpene profile on this strain is one of its strongest selling points. Crack open a cured jar and you'll get an immediate wave of orange citrus — sharp, bright, almost like zesting a blood orange. Underneath that, there's a floral sweetness that's more noticeable when you actually smoke or vaporise the flower. On the inhale, floral notes sit at the front. On the exhale, the citrus pushes through and lingers. It's a complex, layered flavour that doesn't taste like every other auto on the market.

The buds themselves cure into dense, tightly packed nuggets with a generous coating of resin. They're sticky to the touch even after a proper dry and cure — the kind of buds that gum up your grinder. If you're growing for flavour, a slow dry and a 2–4 week cure in glass jars will bring out the best in these terpenes. Rushing the dry is the single fastest way to flatten that citrus-floral complexity into generic "weed" flavour.

Original Auto Amnesia Haze vs Other FastBuds Autos

If you're browsing the FastBuds lineup and wondering where this one fits, here's some context. Compared to something like a Gorilla Glue Auto, Original Auto Amnesia Haze grows taller, stretches more, and delivers a distinctly sativa-leaning flavour rather than the earthy diesel you'd get from a GG. Yield potential is comparable, but the Amnesia Haze demands more vertical space. Against a more beginner-friendly auto like a Zkittlez Auto, the Amnesia Haze is the bigger challenge but also the bigger reward in terms of yield ceiling and flavour complexity. If you want the easiest possible first grow, this isn't it. If you want the most satisfying harvest from 70 days of work, it absolutely is.

Indoor vs Outdoor: Where Original Auto Amnesia Haze Performs Best

Indoors, she's a strong performer — 650g/m² is an excellent ceiling for any auto, and with proper lighting (18/6 or 20/4 schedule on a quality LED), you can push close to that number. The main challenge indoors is height management. At 150cm, she'll crowd a short tent fast. A 120cm tent works if you train aggressively from week three. A 160cm+ tent gives you breathing room.

Outdoors in a warm, sunny climate is where this strain truly shines, though. FastBuds designed her to soak up direct sunlight, and in Mediterranean or similar conditions, yields can exceed indoor numbers significantly. The one thing you'll absolutely need outdoors is support — stakes, cages, or a trellis. The buds get heavy and dense enough to snap branches if left unsupported. We've seen growers lose top colas to their own weight in the final week. Don't let that be you.

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Last updated: April 2026