How to Grow Amnesia Haze
Amsterdam coffeeshop legend - near-pure sativa that demands experience but rewards growers with extraordinary yields and an euphoric high.
Amnesia Haze Grow Timeline
Amnesia Haze Seeds & Genetics
Genetics: South Asian x Jamaican x Haze hybrid | Breeder: Soma Seeds / Amsterdam breeders | Type: Sativa-dominant (90% Sativa)
Amnesia Haze is a near-pure sativa developed in Amsterdam from South Asian, Jamaican and Haze genetics. It won multiple High Times Cannabis Cup awards and became a staple of Amsterdam coffeeshops. Soma Seeds, Dinafem and Royal Queen Seeds all produce well-regarded feminised versions. Our beginner cannabis growing guide provides the essential foundation before tackling this advanced strain.
Indoor vs Outdoor Growing Amnesia Haze
SCROG is virtually mandatory for indoor Amnesia Haze - without it, the plant will outgrow most grow tents. See our SCROG guide. Flip to 12/12 after just 4-5 weeks of veg and prepare for significant stretch. LED lighting is preferred for its long flowering period - see our LED grow lights guide. Outdoors, needs a long warm season - Mediterranean and subtropical climates are ideal.
Nutrients & Feeding for Amnesia Haze
Amnesia Haze is a heavy feeder with high nitrogen demand in veg and substantial phosphorus and potassium requirements throughout its long flowering. Feed EC 1.4-2.2 in veg and 1.6-2.0 during peak flowering. CalMag essential. Begin flush only in the final 10-14 days given the long flowering time. Our nutrients guide has specific guidance for long-flowering sativa strains.
Common Problems & Solutions
Presents multiple challenges: extreme height, very long flowering time, high nutrient demand and sensitivity to humidity. Without SCROG it will overwhelm most indoor spaces. Consistent environmental management is critical during the extended flowering period. Some phenotypes show magnesium deficiency in late flower - supplement CalMag.
Harvest, Drying & Curing Amnesia Haze
Ready after 10-12 weeks of flowering when trichomes are 80-90% cloudy. Preserve psychedelic sativa clarity by not waiting for heavy amber. Hang-dry 10-14 days in cool ventilated conditions. Cure minimum 4-6 weeks - flavour and potency improve significantly with extended curing. Full details in our harvest guide.
Full terpene profile, effects and uses of Amnesia Haze.
Terpenes & Effects
Frequently Asked Questions
Is Amnesia Haze hard to grow?
Amnesia Haze is one of the more challenging strains - extreme height, very long 10-12 week flowering time and high nutrient demands. Best suited to experienced growers.
How long does Amnesia Haze flower?
Amnesia Haze takes 10-12 weeks to flower indoors - one of the longest of any widely available strain.
What yield does Amnesia Haze produce?
Amnesia Haze is a top yielder - 500-650g/m2 indoors with SCROG. Outdoor plants in warm climates can exceed 700g per plant.
Can Amnesia Haze grow outdoors in northern Europe?
Amnesia Haze is very difficult to finish outdoors in northern Europe due to its 10-12 week flowering time. Southern Spain or Italy are ideal. Consider autoflowering variants.
What does Amnesia Haze smell like?
Complex citrus-lemon aroma with earthy and spicy undertones. The scent is powerful during late flowering - a quality carbon filter is essential.
Is the autoflowering Amnesia Haze worth growing?
Autoflowering Amnesia Haze sacrifices some yield and potency but finishes in 10-12 weeks total and is much more manageable for beginner and intermediate growers.