Hawaiian Rain

Transplant after the last frost and when soil temperatures are consistently above ten degrees Celsius; in the Scottish Highlands this is often late May to early June.

Provide strong ventilation, remove dense lower foliage and run dehumidification during flowering to keep relative humidity under sixty percent.

Yes, it performs well outdoors with full sun and good air movement but benefits from sheltered sites in the Scottish Highlands to reduce rain and wind stress.

Use moderate nitrogen during vegetative growth and increase potassium and phosphorus during bloom to encourage dense bud formation.

Flush with plain water for seven to ten days depending on substrate and nutrient strength to improve smoke quality.

Many commercial lines are sold as feminised, though regular and auto-flowering variants are available from specialist breeders.

Yes, a polytunnel gives protection from heavy rain and wind but you must monitor humidity closely to avoid mould.

Top early and use low-stress training to create an even canopy and reduce vertical stretch, then maintain through mid-vegetative stage.

Keep an eye out for aphids, thrips and botrytis; regular inspection, cleanliness and biological controls limit outbreaks.

Dry slowly at around eighteen to twenty degrees Celsius and fifty to sixty percent humidity, then cure in airtight jars for several weeks for optimal flavour.