Amnesia Haze
Cannabis seeds
by Soma Seeds
Amnesia Haze Feminized Seeds by Soma Seeds
Amnesia Haze feminized seeds are a sativa-dominant cannabis seed producing plants with some of the most layered, complex flavour profiles you'll find in any seed catalogue. Bred by Soma Seeds in Amsterdam, this strain crosses South-East Asian sativas, Jamaican Haze, and an Afghani-Hawaiian hybrid into a single genetic line that took 1st place at the 2004 High Times Cannabis Cup for Best Cannabis. If you've ever walked into an Amsterdam coffeeshop and been hit by that sharp, peppery haze aroma before you've even sat down — there's a solid chance Amnesia Haze set that standard.
What Makes These Amnesia Haze Seeds Worth the Wait
Amnesia Haze feminized seeds from Soma Seeds aren't a quick-turnaround strain. You're looking at 10-12 weeks of flowering, which is longer than most hybrids on the market. That patience pays off in resin production and flavour complexity that shorter-flowering strains simply can't match. The 80/20 sativa-to-indica ratio means the plant grows tall and stretchy — classic sativa architecture — but the Afghani-Hawaiian genetics in the cross add enough structural stability and bud density that you're not wrestling a pure sativa vine for three months.
The flavour is where this strain earns its reputation. On the inhale, you get bright citrus and something almost fruity-sharp — like biting into a grapefruit rind. The exhale settles into warmer, more floral territory with an earthy sweetness that lingers. That fresh, peppery haze aroma fills a room before you've even sparked up. It's the kind of strain where you notice something new on the third or fourth session. According to research published in PMC using mass spectrometry-based tools to analyse Cannabis cultivar extracts, the chemical diversity within individual strains like Amnesia can be remarkably broad (PMC, 2024) — which tracks with what your nose and palate tell you.
The honest limitation: 10-12 weeks of flowering means this isn't the strain for impatient growers or anyone on a tight rotation schedule. If you want something faster, look at an indica-dominant hybrid. But if you've got the time and the vertical space, Amnesia Haze rewards you with yields and quality that justify every extra week.
Amnesia Haze Feminized Seeds — Growing Specs
| Specification | Detail |
|---|---|
| Seed Bank | Soma Seeds (Amsterdam) |
| Seed Type | Feminized (photoperiod) |
| Seeds Per Pack | 5 |
| Genetics | South-East Asian Sativa x Jamaican Haze x Afghani-Hawaiian |
| Sativa / Indica Ratio | 80% Sativa / 20% Indica |
| THC Content | High |
| Flowering Time | 10-12 weeks |
| Suitable Environment | Indoor / Greenhouse |
| Yield | High |
| Award | 1st Place, High Times Cannabis Cup 2004 (Best Cannabis) |
Genetics Breakdown — Why This Amnesia Haze Cross Works
Soma Seeds didn't just throw three landrace genetics into a blender. The South-East Asian sativa parentage delivers that electric, cerebral character and the long, spear-shaped bud structure. The Jamaican Haze adds the classic haze flavour backbone — that sharp, almost incense-like quality that haze lovers chase. Where it gets clever is the Afghani-Hawaiian cross: the Afghani genetics bring resin production and shorter internodal spacing (so your plant isn't just a bare pole with a bud on top), while the Hawaiian side contributes tropical sweetness to the terpene profile and keeps the vigour high.
The result is a plant that grows like an 80% sativa but finishes like something with more indica discipline. You still need vertical space — expect significant stretch in the first 2-3 weeks of flower — but the buds fill out with a density you wouldn't expect from a haze-dominant strain. According to research on cannabis terpene profiles published in Molecules (PMC, 2020), the interaction between terpene compounds and cannabinoids in complex genetic backgrounds like this contributes to what's often called the entourage effect, where the full chemical profile of the plant produces a more varied result than isolated compounds alone.
How to Grow Amnesia Haze Feminized Seeds
- Germinate your Amnesia Haze feminized seeds using the paper towel method or directly in a starter plug. Keep temperatures between 22-25°C and maintain consistent moisture without waterlogging. Taproots typically appear within 48-72 hours.
- Transplant seedlings into their growing medium once the taproot is 1-2cm long. Amnesia Haze does well in soil or coco coir. If you're growing in soil, a light, airy mix with perlite gives the roots room to develop — this strain builds a substantial root system.
- During vegetative growth, keep your light cycle at 18/6. This is a tall-growing sativa, so consider topping or using LST (low-stress training) early to manage height. If you're growing indoors in a tent, plan for the plant to roughly double in height during the flowering stretch.
- Switch to a 12/12 light cycle to trigger flowering. The first 2-3 weeks will see significant vertical stretch — this is normal for an 80% sativa. Support branches with stakes or a trellis net as buds develop weight.
- Flowering runs 10-12 weeks. Don't rush harvest based on calendar dates alone — check trichome colour with a loupe. You want mostly milky trichomes with a few turning amber. Harvesting too early with this strain is the most common mistake we see; the last 1-2 weeks make a real difference to resin maturity and flavour development.
- Dry in a dark, well-ventilated space at around 18-20°C and 55-60% humidity for 10-14 days. Cure in glass jars for a minimum of 2 weeks, burping daily for the first week. Amnesia Haze rewards a longer cure — 4 weeks or more brings out the full depth of that citrus-floral terpene profile.
Amnesia Haze vs Other Sativa-Dominant Seeds
| Feature | Amnesia Haze (Soma Seeds) | Typical Sativa Hybrid | Typical Indica-Dominant |
|---|---|---|---|
| Sativa/Indica Ratio | 80/20 | 60/40 - 70/30 | 20/80 - 30/70 |
| Flowering Time | 10-12 weeks | 8-10 weeks | 7-9 weeks |
| Height | Tall (significant stretch) | Medium-tall | Short-medium |
| Flavour Complexity | High (citrus, floral, peppery) | Moderate | Moderate (earthy, sweet) |
| Training Required | Recommended (LST/topping) | Optional | Usually not needed |
| Best Environment | Indoor / Greenhouse | Indoor / Outdoor | Indoor / Outdoor |
Growing Amnesia Haze indoors? You'll want a proper setup to handle the stretch and the smell. A grow tent with good vertical clearance pairs well with these seeds — anything under 160cm tall will leave you fighting the canopy by mid-flower. A carbon filter and inline extraction fan are non-negotiable for the aroma this strain produces in late bloom. If you're building out a grow space, grab your ventilation gear at the same time as your seeds.
Soma Seeds — The Seed Bank Behind Amnesia Haze
Soma Seeds is an Amsterdam-based seed bank with a reputation built on organic breeding methods and a catalogue that prioritises flavour and effect over raw yield numbers. Soma himself has been a fixture in the Amsterdam cannabis scene for decades, and his approach to breeding leans heavily on selecting for terpene complexity and resin quality. The 2004 Cannabis Cup win for Amnesia Haze wasn't a one-off — it was the result of years of selective breeding to stabilise a genetic cross that could easily have been unworkable.
What sets Soma Seeds apart from larger commercial seed banks is the scale. This isn't a factory operation churning out hundreds of varieties. The catalogue is focused, the genetics are tested over multiple generations, and the feminized seeds are produced with care. You're paying for consistency and proven genetics, not flashy packaging.
Frequently Asked Questions
How long does Amnesia Haze take to flower?
Amnesia Haze feminized seeds flower in 10-12 weeks. That's on the longer side for indoor growing, but the extended flowering period is what produces the complex terpene profile and dense resin production this strain is known for. Don't cut it short — the last two weeks matter.
Is Amnesia Haze hard to grow?
It's not a beginner strain. The 80% sativa genetics mean significant vertical stretch during early flower, and the 10-12 week bloom phase requires patience and stable environmental control. If you've done one or two successful grows already, you'll manage fine. First-timers should start with something shorter-flowering.
Can I grow Amnesia Haze outdoors?
Soma Seeds recommends indoor or greenhouse environments for Amnesia Haze. The long flowering time means outdoor growers in northern Europe risk running into cold, wet autumn weather before the buds mature. A greenhouse gives you the light hours and protection to finish properly.
What does Amnesia Haze smell and taste like?
Sharp citrus and something almost grapefruit-like on the inhale, settling into warmer floral and earthy sweetness on the exhale. The aroma during late flower is intensely peppery and will fill a room — or a flat — without a carbon filter. It's one of the most recognisable haze profiles around.
How many seeds come in a pack of Amnesia Haze from Soma Seeds?
Each pack contains 5 feminized seeds. All seeds are photoperiod feminized, meaning they'll produce female plants under a 12/12 light cycle without needing to identify and remove males.
What makes Amnesia Haze different from other haze strains?
The three-way genetic cross — South-East Asian sativa, Jamaican Haze, and Afghani-Hawaiian — gives Amnesia Haze a structural stability and resin production that pure haze strains lack. It won the 2004 Cannabis Cup and has been a coffeeshop staple in Amsterdam ever since. The flavour complexity is a step above most haze varieties.
Does Amnesia Haze need training techniques like LST or topping?
Strongly recommended for indoor grows. Without training, the sativa stretch can easily push the plant beyond your light's effective range. Topping during veg and using LST or a SCROG net during early flower keeps the canopy even and the buds within the light's sweet spot.
What yield can I expect from Amnesia Haze feminized seeds?
Yields are rated as high by Soma Seeds. Actual numbers depend on your setup — light intensity, pot size, training method, and how well you manage the 10-12 week flowering period all play a role. Well-trained plants under strong lighting consistently produce generous harvests.
Last updated: April 2026
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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.