Chem Haze

Use 18/6 during veg and switch to 12/12 to induce flowering for standard photoperiod plants. Maintain consistent dark periods to avoid stress and hermaphroditism.

Good airflow is essential to prevent mould, especially in cool, damp climates. Aim for air exchanges every minute with inline fans and oscillating units at canopy level.

Shift to a bloom formula higher in phosphorus and potassium after the stretch phase. Keep nitrogen moderate and flush lightly before harvest to improve flavour.

Monitor trichomes and take at a mix of cloudy and a few amber for balanced effects. In cooler seasons delay harvest until trichomes and pistils show clear maturity.

Ensure good spacing, prune lower foliage and choose a sheltered, sunny position. Remove any diseased material promptly and consider a light fungicidal regimen if needed.

Most commercial offerings are feminised photoperiod seeds. Autoflower variants are available but will show different growth and yield characteristics.

Topping followed by low-stress training (LST) controls height and increases bud sites. SCROG also works well to spread the canopy under strong indoor light.

Humidity control is crucial, particularly in cool northern summers where damp can spike mould risk. Keep RH lower during late flower and use dehumidification if required.

Use a tent with sealed flooring, adequate extraction, carbon filtration and a quality LED or HID to give 600–1000W equivalent for a small canopy. Control temperature to 20–26°C in light and 16–20°C in dark, and keep RH below 50% in late flower.

Chem Haze is psychoactive with low CBD and focuses on THC-driven effects. For conditions that demand CBD, choose a dedicated high-CBD cultivar instead.