How to Grow White Amnesia

White Amnesia is a 70/30 sativa-leaning hybrid that crosses the frosty White Widow with the classic Amnesia Haze, and it brings tall, resinous colas with a clean herbal, piney flavor. Despite the sativa lean, the effect is calming, happy and relaxed, softened by its White Widow side. THC runs from 18 to 22%. This guide covers the full grow, from germinating the feminized seeds to the final cure.

It is a tall plant at around 5.58 ft with the airy build of a Haze, finishes flowering in 8 to 10 weeks and gives a high yield. If you like these genetics, Blimburn also offers both parents, the feminized White Widow and Amnesia Haze.

Recommended Strains

White Amnesia

	THC	18% - 22% (Medium)
	Type	Feminized
	Yield	High
	Phenotype	30% Indica / 70% Sativa

1 Seed - $17.503 Seeds - $426 Seeds - $659 Seeds - $8025 Seeds - $19550 Seeds - $320100 Seeds - $580 Add to cart

Amnesia Lemon x White Widow

	THC	21% - 22% (Medium)
	Type	Feminized
	Yield	High
	Phenotype	65% Indica / 35% Sativa

1 Seed - $17.503 Seeds - $426 Seeds - $659 Seeds - $8025 Seeds - $19550 Seeds - $320100 Seeds - $580 Add to cart

White Amnesia at a Glance

Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this feminized sativa hybrid, taken straight from the strain’s grow data.

These are feminized seeds, so every plant you grow will flower, and its 70% sativa makeup places it with the sativa seeds for growers who want tall, airy, Haze-style colas.

How to Germinate White Amnesia Seeds

A healthy harvest starts at germination. The paper towel method is hard to beat: fold the 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 one to five days.

Once the root is a few millimetres long, move each seed into its starter pot with the root pointing down and cover it with about 2 cm of soil. Keep the medium lightly moist, not soaked, and hold humidity around 65 to 70% while the first true leaves open. Because these are feminized seeds, you can skip sorting out males later and give every sprout your full attention.

Starter tips

• Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
• Give seedlings gentle light, not a full-power lamp pressed overhead.
• Hold off on nutrients until the second set of serrated leaves appears.

Growing White Amnesia in the Vegetative Stage

White Amnesia likes a temperate climate with warm summers and, because it is a tall Haze, plenty of room and light. Aim for day temperatures of 68 to 81°F and keep veg humidity in the 50 to 60% band so the leaves stay healthy without inviting mould. An airy substrate with perlite, peat or coco coir holds moisture without drowning the roots.

As a tall sativa it suits temperate US regions with a good summer and space to grow:

• Northern California (Emerald Triangle): the long temperate season gives this tall Haze the room and time it needs to finish for an October harvest.
• Pacific Northwest (Portland): temperate summers work well, so train it to a screen to control the height and finish before the autumn rains.
• Colorado Front Range (Denver): warm days and cool nights suit it; give it space and support, and start early so it finishes before the first hard frost.

At up to 5.58 ft this is a tall, stretchy sativa, so manage its height from the start. Top it early, around the fifth or sixth node, and use low-stress training or a screen of green to spread the canopy, keep it under control indoors, and make the most of its high yield.

Flowering and Buds of White Amnesia

Once you switch to a 12/12 light cycle, White Amnesia finishes in 8 to 10 weeks. Expect a big stretch early on, since Haze-leaning sativas can grow a lot in the first weeks of flower, and then it fills out with long, airy, resin-frosted colas.

Drop humidity to 40 to 45% during flower to protect the buds from rot, and keep airflow moving through the tall canopy. Support the lanky branches with stakes or netting, because the high yield and height put strain on them. Outdoors, plants are typically ready to come down in October.

At 18 to 22% THC it frosts over with resin from its White Widow side, so judge ripeness by the trichomes rather than the calendar.

Common Problems and Pro Tips

White Amnesia is rewarding, but its height and Haze structure mean a few things are worth planning for.

• Height: at over 5.5 ft this is a big sativa, so top early and train hard with a screen of green or low-stress training to keep it manageable indoors and spread that high yield.
• Airflow and mould: the long, airy colas benefit from strong airflow; keep humidity down in flower and air moving so the resinous buds do not develop rot where they stack up.
• Pests: check leaf undersides weekly for spider mites, which like warm, dry rooms, and keep the grow space clean on a plant this large.

Expert tip: the White Widow side makes this frostier and more resinous than a pure Haze, so it is a good candidate for hash. Manage the height with an early screen and plenty of veg-time training, give the tall canopy space and light, and protect the resin with a slow dry and a patient cure.

Aroma, Flavor and Effects

The nose is clean and fresh: herbal and piney with a sharp, slightly citrus edge from its Haze side. It reads bright and savoury rather than sweet, and it sharpens as the buds cure in the jar.

The flavor follows, herbal and piney with a fresh finish. On the effect side it is calming, happy and relaxed, a gentler experience than a straight Haze thanks to the White Widow influence, which balances the sativa lift with a soft, easygoing calm.

Terpene profile

This is a deep terpene profile with more than a dozen compounds on the list. The six that shape it most are Pinene for the fresh, piney top note; Limonene for a bright citrus lift; Linalool for a soft floral, calming touch; Terpinolene for a fruity-herbal complexity; Terpineol for a subtle lilac note; and Camphene for a cool, woody edge, with more rounding out the background.

Nutrient Schedule

Treat the figures below as a starting map, not a rulebook. White Amnesia takes a moderate feed well, but read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.

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

With White Widow in its lineage, White Amnesia frosts up more than a typical Haze, so its trim is worth keeping for concentrates. The sticky sugar leaves you take off while manicuring are loaded with 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 fresh herbal-pine 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 White Amnesia

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. Outdoor plants usually reach that point in October, while indoor runs land at the end of the 8 to 10 week flowering window.

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 fresh herbal and pine terpenes 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 turns a good harvest into a genuinely smooth one, and it is the step most first-time growers rush.

Frequently Asked Questions

Is White Amnesia easy to grow for beginners?

Yes, White Amnesia is beginner-friendly. The feminized seeds mean every plant flowers, and it is a hardy, forgiving hybrid. The main thing a first-timer should plan for is its height: at over 5.5 ft it needs space and some early training, but otherwise it is a straightforward grow.

How long does White Amnesia take to flower?

White Amnesia flowers in 8 to 10 weeks indoors once you switch to a 12/12 light cycle. Outdoors it is usually ready in October. Expect a big stretch in the first weeks of flower, typical of its Haze side, so leave headroom and train the canopy before you flip the lights.

How much does White Amnesia yield?

White Amnesia is a high yielder. Indoors you can expect 1.47 to 1.80 oz/ft², and a healthy outdoor plant produces around 21.16 oz/plant. Give it room for its height, support the lanky colas, and train the canopy with a screen to reach the top of that range.

How strong is White Amnesia?

White Amnesia has a medium THC level of 18 to 22%. Despite its sativa lean, the effect is calming, happy and relaxed, with the White Widow side softening the usual Haze buzz into something gentler. It is potent but easygoing rather than racy, which makes it an approachable sativa.

What does White Amnesia taste and smell like?

White Amnesia leads with clean herbal and piney notes over a fresh, slightly citrus base, driven by terpenes like pinene, limonene, linalool and terpinolene. The flavor is bright and savoury rather than sweet, and it sharpens as the buds cure slowly in the jar.

Can I grow White Amnesia outdoors?

Yes, White Amnesia does well outdoors in a temperate climate with warm summers. Give it plenty of space for its 5.58 ft height, train it to a screen to keep it manageable, and support the tall colas. It is usually ready to harvest in October, before the autumn turns wet.