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How to Grow Amnesia Haze
Learn how to grow Amnesia Haze from seed to harvest in 150 days. Advanced difficulty. Complete nutrient guide, pH/EC requirements, and growing conditions for hydroponics, soil & greenhouse.
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Temperature
Amnesia Haze, as a sativa-dominant cultivar, tolerates and benefits from warmer temperatures than indica-dominant strains. Germination requires 20-28C (optimal 22C). Vegetative growth is optimal at 22-29C day / 18-22C night — sativa genetics allow higher heat tolerance up to 29C before stress occurs. During flowering, maintain 22-27C day / 18-22C night; a 5-8C day/night differential in late flower enhances terpene and resin development. Temperatures above 30C reduce cannabinoid yields and may attract spider mites. Growth ceases below approximately 15C.
Humidity
Humidity management must be adjusted at every growth stage for Amnesia Haze. Germination: 70-90% RH.
Light
Amnesia Haze has high light demand consistent with its sativa genetics. Vegetative phase: 18h photoperiod at 400-800 umol/m2/s PPFD, achieving DLI of 20-35 mol/m2/day.
Airflow
Proper airflow is especially important for Amnesia Haze due to its tall sativa growth pattern (120-200 cm) and long 10-13 week flowering cycle. Target 0.2-0.5 m/s at canopy level using oscillating fans; stronger airflow up to 1.0 m/s during vegetative growth improves stem strength via mechanostimulation.
Nutrition
Amnesia Haze nutrition follows the same research-validated principles as other drug-type Cannabis sativa cultivars. Nitrogen at 160 mg/L is optimal for both vegetative and flowering stages (Saloner & Bernstein 2020; Bevan et al.
Propagation
Amnesia Haze is best propagated from stem cuttings (clones) to preserve its specific sativa-dominant genetics and chemotype. Take cuttings 6-15 cm long with 2-3 fully expanded leaves at a clean 45-degree cut below a node.
Harvesting
Amnesia Haze reaches harvest readiness at 10-13 weeks of flowering (typically 12 weeks / 84 days from 12/12 switch) — one of the longest flowering periods in cannabis. The primary indicator is trichome maturity under 60x magnification: harvest when 70-80% of capitate-stalked trichome heads appear milky/cloudy with…
Calendar
Indoors, Amnesia Haze can be grown year-round under artificial lighting. Vegetative growth uses an 18/6h light cycle (minimum 6-8 weeks recommended for sativa development).
Environments
Amnesia Haze is adaptable to all four cultivation environments. Indoor cultivation is preferred for precise climate control over the long 10-13 week flowering period — height management (SCROG, LST, topping) is essential given the aggressive sativa stretch.
System Compatibility
Amnesia Haze is compatible with all major active hydroponic systems. DWC is an excellent choice with yields up to 600 g/m2.
Growing Media
Amnesia Haze adapts to all standard cannabis growing media. Coco coir is the preferred hydroponic medium — provides excellent drainage and aeration with precise nutrient control.
Container Specs
Amnesia Haze demands larger containers than most indica varieties due to its tall sativa stature (120-200 cm) and vigorous root system. Indoors: minimum 7-gallon (26L) container; 10 gallons (38L) preferred for full flowering stretch.
Training & Support
Training is essential for Amnesia Haze — without it, this sativa-dominant cultivar (70% sativa) will exceed 150 cm indoors. The recommended approach combines LST with SCROG.
Common Issues
Amnesia Haze faces a specific pest and disease risk profile shaped by its sativa genetics. Its airier bud structure reduces — but does not eliminate — Botrytis bud rot risk compared to dense indicas, though the extended 10-13 week flowering period increases cumulative pathogen exposure.