How to Grow Amnesia Fast Version
Amnesia Fast Version is a 70% sativa-dominant fast-flowering strain, a cross of Amnesia and a secret hybrid. It carries a THC level of 22 to 25%, which runs from medium to high, and delivers an energetic, euphoric and uplifted effect over a fruity, incense-like and woody flavor. It is a fast version, a photoperiod plant bred to finish quicker than classic Amnesia without turning into an autoflower. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It reaches a medium 1.5 m, flowers in a quick 8 to 10 weeks, and its short bloom lets it finish across a range of seasons with a high yield. That speed, paired with a forgiving nature, makes it a strong pick even for first-time growers.
Recommended Strains
Amnesia Fast Version
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THC | 22% - 25% (High) |
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Type | Fast Flowering |
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Yield | High |
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Phenotype | 30% Indica / 70% Sativa |
Amnesia Lemon Fast Version
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THC | 20% - 22% (Medium) |
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Type | Fast Flowering |
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Yield | Medium |
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Phenotype | 45% Indica / 55% Sativa |
Amnesia Fast Version at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this fast-flowering, Haze-driven sativa, taken straight from the strain’s grow data.
| Seed type | Fast version (photoperiod) |
|---|---|
| Genetics | Amnesia x secret hybrid |
| Phenotype | 70% Sativa / 30% Indica |
| THC | 22–25% (medium to high) |
| Flowering time | 8–10 weeks |
| Harvest | All season |
| Height | up to 4.92 ft (1.5 m) |
| Yield indoor | 1.31–1.64 oz/ft² |
| Yield outdoor | up to 21.16 oz/plant |
| Climate | Temperate |
| Flavors | Fruity, Incense, Woody |
| Effects | Energetic, euphoric, uplifted |
| Difficulty | Beginner-friendly |
These are fast flowering seeds, photoperiod plants bred to bloom quicker than a standard strain. Its 70% sativa lean places it among the sativa seeds, while its strong harvest earns it a spot with the high-yielding seeds. Its Amnesia backbone also makes it a classic in the wider family of Haze strains.
Promos & Deals
How to Germinate Amnesia Fast Version Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Amnesia Fast Version seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.
Once the taproot is a few millimeters long, move each seed root-down about 1 cm deep into a small pot of light, airy medium. Keep it lightly moist rather than soaked, hold humidity around 65 to 70%, and give soft light while the first true leaves open. Its vigorous genetics make for a fast, dependable seedling.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Keep seedlings warm and humid, but never waterlogged.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Amnesia Fast Version in the Vegetative Stage
As a photoperiod plant, you control the veg stage with the light schedule. Keep Amnesia Fast Version on 18 hours of light a day for as long as you want it to grow, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. It suits a temperate climate, so steady, moderate conditions work in its favor. As a 70% sativa it grows tall and lanky with open internodal spacing, so plan for a plant that keeps reaching.
This is the stage to shape the plant. Because sativas stretch, topping early and using low-stress training to pull the branches outward keeps the canopy even and the height in check, especially indoors. Unlike an autoflower, you decide when to flower it, so you can run a short veg to keep it compact or a longer one for a bigger plant before you flip.
Its reaching structure and quick finish make it versatile both indoors and out:
- Short-season outdoor plots: its fast 8 to 10 week bloom lets it finish before the worst of the autumn damp, useful in cooler regions.
- Mediterranean-style gardens: plenty of sun and space let it stretch out and fill its colas quickly.
- Indoor tents: keep veg short and train hard, as its sativa stretch will otherwise test the height of a tent.
Flowering and Buds of Amnesia Fast Version
Indoors, flip Amnesia Fast Version to a 12/12 light cycle to trigger flowering, which runs a quick 8 to 10 weeks, faster than a classic Amnesia. As a sativa it shows a significant stretch in the first weeks after the flip, so leave headroom, then forms long, resinous, spear-shaped colas.
Through bloom, drop humidity to 40 to 45% and keep air moving so the long flowers stay clean. The buds build a fruity aroma over a dry, woody base with a distinctive incense-like, spicy edge, the lively Haze character of its Amnesia parent coming through bright and resinous.
At 22 to 25% THC it runs from medium to high, giving an energetic, euphoric and uplifted effect, a lively, daytime lift with the clear-headed character of a Haze sativa.
Common Problems and Pro Tips
Amnesia Fast Version is beginner-friendly, but its sativa stretch and fast bloom point to a few things worth watching.
- Manage the stretch: as a 70% sativa it can nearly double in height after the flip, so keep veg short and train early to stay within your space.
- Do not rush the quick bloom: even at 8 to 10 weeks, wait for the trichomes rather than the calendar, as the last days still build potency and resin.
- Airflow for long colas: keep a fan moving and humidity below 45% late in flower so the long, resinous buds stay clean and dry.
Expert tip: its fruity-and-incense profile rewards a clean grow. Train hard in veg to tame the sativa stretch, and dry and cure slowly so the bright fruit and spicy incense hold up over its woody base.
Aroma, Flavor and Effects
The nose is bright and distinctive: a sweet, fruity lift up front over a dry, woody base, with an unmistakable incense-like, spicy edge that is pure Amnesia Haze. It is an energetic, uplifting profile rather than a heavy or dessert-sweet one.
The flavor follows the nose, sweet fruit and dry wood with a spicy, incense-like finish. On the effect side it is energetic, euphoric and uplifted, a lively, sociable lift. Because THC runs from a medium to high 22 to 25%, it leans more potent while staying clear-headed.
Dominant terpenes
Amnesia Fast Version carries a bright, layered terpene profile. Limonene drives a fresh, fruity-citrus lift, Terpinolene adds the fresh, woody-piney note behind its incense-like edge, Myrcene lays down an earthy, fruity base, Caryophyllene a warm, peppery spice, Pinene a sharp pine note, and Ocimene a sweet, herbal lift. A supporting pair of Carene and Linalool rounds out its fruity, incense and woody character with piney and soft floral undertones.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. As a vigorous, high-yielding sativa Amnesia Fast Version is a steady feeder, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Amnesia Fast Version builds a solid coat of resin, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the bright, fruity Haze flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Amnesia Fast Version
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. With this fast version that point lands around 8 to 10 weeks after the flip, quicker than a classic Amnesia.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the fruity, incense and woody aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the sweet fruit and spicy, incense-like depth really come together, and it is the step most first-time growers rush.
Frequently Asked Questions
Is Amnesia Fast Version an autoflower?
No, Amnesia Fast Version is a fast-flowering photoperiod strain, not an autoflower. You still switch it to a 12/12 light cycle to start bloom, but it has been bred to finish faster than a classic Amnesia. So you keep full control over veg time while enjoying a shorter overall grow.
Is Amnesia Fast Version easy to grow for beginners?
Yes, Amnesia Fast Version is beginner-friendly. Its vigorous genetics are forgiving and its fast 8 to 10 week bloom shortens the grow. The main thing to plan for is its sativa stretch, so keep veg short, train the plant early, and give the long colas some support as they fill in.
How long does Amnesia Fast Version take to flower?
Amnesia Fast Version flowers in a quick 8 to 10 weeks once you switch it to a 12/12 light cycle, faster than a classic Amnesia. As a sativa it stretches hard in the first weeks after the flip, then forms long, resinous colas over that shortened bloom window.
How strong is Amnesia Fast Version?
Amnesia Fast Version has a THC level of 22 to 25%, which runs from the medium range into the high range. The effect is energetic, euphoric and uplifted, a lively, clear-headed lift. It leans more potent than a mild strain, so go easy at first if you are sensitive to THC.
How much does Amnesia Fast Version yield?
Amnesia Fast Version is high-yielding. Indoors it gives around 1.31 to 1.64 oz/ft², and outdoors a plant can reach up to 21.16 oz in good conditions. Space, strong light and early training are what help this vigorous sativa fill out its long, resinous colas to their full potential.
What does Amnesia Fast Version taste and smell like?
Amnesia Fast Version leads with a sweet, fruity aroma over a dry, woody base, with a distinctive incense-like, spicy edge that is pure Amnesia Haze. It is a lively, uplifting profile rather than a heavy one. Both the aroma and flavor deepen as the buds cure slowly after harvest.
