Sub Zero

Start with a mild vegetative feed then increase phosphorus and potassium during bloom. Monitor runoff EC and adjust to avoid nutrient burn.

Aim for 40–50% RH in flower to reduce mould risk while maintaining trichome development. Use dehumidifiers and good airflow in enclosed spaces.

It performs well at sea level and moderate elevations, though higher altitudes may speed transpiration. Adjust watering and feed accordingly.

Switch when the vegetative structure is well-developed and you've topped or trained as required, typically after 4–6 weeks. That timing yields a balanced flower-to-veg ratio.

It shows moderate resistance but needs proactive measures against spider mites and botrytis. Keep the canopy open and inspect regularly.

Yes, it can finish outdoors in milder parts of the UK with an early enough spring and warm summer. Position plants to avoid prolonged exposure to autumn rain.

Wet trimming helps when humidity is high, while dry trimming preserves terpene profile in drier conditions. Trim to maintain airflow and remove fan leaves during late flower.

Cure for at least two to four weeks in controlled jars for improved smoothness and aroma. Extended curing will further refine flavour and burn quality.

Controlled climate cannabis growing lets you hold stable temperatures and RH, reducing stress and maximising resin. That stability improves yield consistency and terpene retention.

Full-spectrum LED fixtures at moderate intensity suit this compact plant and reduce heat stress. Keep PPFD in the bloom canopy around 600–800 µmol/m²/s for best results.