Black Marshmallow

Yes, it can be grown outdoors in the UK if planted in a sheltered, well-drained site and monitored for mould during wet periods.

Use good ventilation, maintain lower plant density, remove lower foliage and consider a rain cover or greenhouse to limit direct wetting of buds.

Switch after a strong vegetative phase of 4–6 weeks indoors or allow outdoor plants to flower naturally once daylight shortens in late summer.

Moderate nitrogen in veg, followed by higher phosphorus and potassium in flower, with careful feeding to avoid excess salts that stress the plant.

Expect a harvest window of about one to two weeks once trichomes reach the desired milky/amber ratio.

Yes, low-stress training and topping encourage an even canopy and better light penetration for higher yields.

Yes, it adapts well to outdoor cannabis cultivation with appropriate shelter, antifungal measures and site selection to avoid excessive damp.

The plant gives off a noticeable berry-sweet scent, so carbon filtration or discreet site selection is advised if odour is a concern.

Expect common pests like aphids, spider mites and thrips; regular inspections and integrated pest management help keep infestations low.

Dry slowly in a dark, ventilated room at 18–21°C and 45–55% RH for 7–10 days, then cure in jars, burping daily for two weeks, to preserve flavour and potency.