How to Grow Amnesia Haze
Amnesia Haze is a legendary, multi-award-winning sativa-dominant feminized strain. It is a 70/30 sativa-leaning plant with a medium 18-22% THC, a citrus, sweet and pungent flavor, and a creative, focused, munchie-inducing effect. Tall, aromatic and famously productive, it is a rewarding sativa project and, despite its height, a surprisingly beginner-friendly classic.
This is a feminized photoperiod strain, so every seed grows into a flowering female and you start flowering by switching the light cycle to 12/12, which lets you decide how big the plant gets before you flip it. It carries the classic Amnesia Haze heritage: a bright, energizing sativa with a sharp, pungent citrus aroma and long, resin-dusted colas.
Recommended Strains
Amnesia Haze Auto
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THC | 16% - 17% (Medium) |
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Type | Autoflowering |
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Yield | Medium |
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Phenotype | 25% Indica / 75% Sativa |
Amnesia Haze Autoflower F1
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THC | 24% - 30% (High) |
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Type | Autoflowering F1 |
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Yield | High |
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Phenotype | 30% Indica / 70% Sativa |
Aromatic, uplifting and justly famous, Amnesia Haze is a rewarding sativa to grow if you give it room and a little patience. You can see the full details and buy Amnesia Haze seeds on the strain page, and browse the rest of our sativa seeds alongside it.
Strain Profile at a Glance
| THC | Medium (18-22%) |
|---|---|
| Lineage | Original Amnesia Haze |
| Type | Feminized (photoperiod) |
| Awards | Cannabis Cup (2012), Spannabis (2011, 2015, 2018) |
| Genetics | 70% Sativa / 30% Indica |
| Climate | Tropical, warm |
| Flowering time | 8-10 weeks |
| Harvest (outdoor) | October |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.64-1.97 oz/ft² (500-600 g/m²) |
| Yield outdoor | 24.69-28.22 oz/plant (700-800 g/plant) |
| Grow difficulty | Beginner-friendly, but needs height management |
| Flavors | Citrus, Sweet, Pungent |
| Effects | Creative, Focused, munchie-inducing |
Promos & Deals
Growing a Feminized Strain
Amnesia Haze is a feminized photoperiod strain, so every seed grows into a flowering female and there is no sexing and no males to remove. Because it flowers on the light cycle rather than on age, you control the timing: keep it under long 18/6 days to grow and build the frame you want, then switch to 12 hours of light and 12 of darkness to start flowering. That control matters with a sativa like this, because it stretches hard once you flip it.
As a 70% sativa, Amnesia Haze grows tall and open, reaching around 1.5 m by harvest with a big stretch after the flip. Flip it earlier than you would an indica and train it early, topping and using low-stress training to spread the canopy and keep the height in check. Its long, airy, resin-dusted colas and 8 to 10 week flowering window are classic haze traits, so give it room and plan for the stretch.
Climate and Where to Grow It
Amnesia Haze does best in a warm, tropical-leaning climate with plenty of sun, steady warmth and a long, mild season, which gives this haze the time it needs to finish. Its sativa genetics love light and heat, and it does well both indoors in a tent and outdoors where the season is long enough. Outdoors in the Northern Hemisphere it is ready to harvest around October, after a full season of sun.
Yields are high for a sativa, giving around 500-600 g/m² indoors and a large 700-800 g per plant outdoors with good sun and space. At around 1.5 m with a strong stretch it needs headroom, so keep the tall canopy open and supported so light reaches the lower buds. As a classic haze strain, it rewards a long, warm finish with its best flavor and resin.
Airflow is important with a tall, open sativa like this, so keep the air moving and humidity sensible through flowering: around 55-60% in veg, nearer 40% as the flowers fill out, and lower toward harvest. Its airy bud structure resists mold better than a dense indica, but a long flowering window still means a long exposure, so steady ventilation keeps the finish clean. Aim for daytime temperatures around 68-82°F (20-28°C).
Feeding Schedule (EC Guide)
Amnesia Haze is a vigorous, high-yielding sativa that feeds steadily through a long cycle. Build the feed up gradually through veg, push phosphorus and potassium once it is in flower to fuel those long colas, then taper off for the final flush so the bright citrus, sweet and pungent notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4-0.6 | Very light feed while roots establish |
| Vegetative | 0.8-1.2 | Raise nitrogen as the plant builds size |
| Early flower | 1.2-1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4-1.6 | Peak bloom feed while the colas fill out |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once you switch Amnesia Haze to a 12/12 light cycle it flowers in about 8 to 10 weeks, relatively quick for a sativa of this stretch and yield. It fills out with long, airy, resin-dusted colas rather than tight indica nuggets, developing the sharp, pungent citrus aroma it is famous for over a sweet base. Outdoors in the Northern Hemisphere it is ready to harvest around October, after a long, full season.
Yields are high: around 500-600 g/m² indoors and 700-800 g per plant outdoors with good sun and space. Support the tall colas, keep the canopy open so the lower buds get light, feed it steadily through flower, and harvest when most of the trichomes have turned cloudy for the brightest, most energetic effect, or leave a few amber for a slightly rounder finish.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry preserves the sharp, pungent citrus terpenes that make this haze so aromatic, and the airy bud structure dries evenly if you keep the air gently moving.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings out the citrus, sweet and pungent notes and smooths the smoke, turning a freshly dried harvest into the fragrant, lively haze that made this strain a legend.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Amnesia Haze carries plenty of resin on its colas, so its trim is good for dry sift, bubble hash or rosin. The sharp, pungent citrus aroma carries right through into a concentrate, so saving the trim turns offcuts into a flavorful, aromatic run rather than waste.
Flavor and Terpenes
Amnesia Haze leads with a bright, sharp flavor: zesty citrus and a sweet backbone, carried on the pungent, almost spicy aroma that defines a classic haze. It is a lively, fragrant smoke, and a good cure really lifts that citrus-sweet brightness in the jar and on the inhale.
Its terpene profile shapes that flavor. Alpha-pinene and beta-pinene drive the fresh, sharp pine note at the heart of the haze aroma, while terpinolene adds a fresh, herbal lift and caryophyllene brings the warm, peppery pungency. A touch of myrcene rounds out the base, with linalool and a hint of geraniol adding soft, floral sweetness. The zesty citrus sits on top of those terpenes, giving Amnesia Haze its fresh, pungent character.
Effects and Best Use
With its medium 18-22% THC and sativa-leaning 70/30 make-up, Amnesia Haze delivers a bright, energizing experience. It is reported as creative, focused and munchie-inducing, a clear, heady lift that keeps you sharp and engaged, which makes it a daytime strain for creative work, conversation and getting things done. Its medium potency keeps it approachable and easy to enjoy.
That creative, focused, munchie-inducing profile makes it a classic wake-and-work haze, good for creative projects and busy days while enjoying its sharp, citrus-sweet flavor. The combination of an award-winning reputation, an uplifting effect and a high yield is exactly why growers take on its height and stretch.
Common Problems and Pro Tips
Amnesia Haze is beginner-friendly in that it is a sturdy, forgiving feminized plant, but its main challenge is height. As a 70% sativa it stretches hard after the flip, so flip it earlier than an indica, top it and use low-stress training to keep the canopy even and the height manageable in a tent. Supporting the tall, airy colas late in flower stops them bending under their own length.
The other thing to plan for is airflow through a long, open flower. Keep the air moving around the stretched canopy and hold humidity sensible as the colas fill out, defoliating a few of the largest fan leaves so light reaches the lower buds. The airy structure resists mold well, but a long flower is a long exposure, so good ventilation matters all the way to harvest.
As a pro tip, lean into what makes this plant special: protect those sharp, pungent citrus terpenes with a gentle dry and a full three to four week cure, go easy on the nutrients late so the flavor stays clean, and save the resinous trim for concentrates. Start seedlings gently to avoid transplant stress, then give it the light, space and headroom a tall haze needs.
FAQ
Is Amnesia Haze a feminized strain?
Yes. Amnesia Haze is a feminized photoperiod strain, so every seed grows into a flowering female and there is no sexing and no males to remove. Because it flowers on the light cycle rather than on age, you veg it under long 18/6 days for as long as you like, then switch to 12/12 to start flowering, which lets you control its final size and yield.
How tall does Amnesia Haze grow?
Amnesia Haze reaches around 1.5 m by harvest, but as a 70% sativa it stretches hard after the flip, often close to doubling in height during early flower. Flip it a little earlier, top it and use low-stress training to spread the canopy and keep the height manageable, especially indoors in a tent where vertical space is limited.
Has Amnesia Haze won any awards?
Yes. Amnesia Haze is a Cannabis Cup winner, taking the title in 2012, and a multiple Spannabis winner in 2011, 2015 and 2018. That pedigree reflects its bright, pungent citrus aroma, its energizing effect and its heavy yields, which together made it one of the most celebrated haze strains in the world.
How long does Amnesia Haze take to flower?
Amnesia Haze flowers in about 8 to 10 weeks once you switch it to a 12/12 light cycle, relatively quick for a sativa of this stretch. Outdoors in the Northern Hemisphere it is ready to harvest around October. A long, warm, well-ventilated finish helps bring out both the sharp citrus aroma and the plant’s best resin.
What does Amnesia Haze taste like?
Amnesia Haze has a bright, sharp flavor of zesty citrus over a sweet base, carried on the pungent aroma that defines a classic haze. Alpha- and beta-pinene drive the fresh pine note, terpinolene adds a herbal lift, caryophyllene the peppery pungency, and linalool and geraniol a soft floral sweetness. A proper cure really brings that brightness forward on the inhale.
How much does Amnesia Haze yield?
Amnesia Haze is a high yielder, giving around 500-600 g/m² indoors and a large 700-800 g per plant outdoors with good sun and space. Give it headroom for its stretch, keep the tall canopy open and supported, and feed it steadily through the long flower so the airy, resin-dusted colas develop fully right down the plant.
