Plant care
Colocasia 'Black Magic'temperature & humidity
Colocasia esculenta 'Black Magic'
More about colocasia 'black magic'
Ideal temperature for colocasia 'black magic'
Aim for 18-27°C (65-80°F) on the thermostat and you've handled the easy part. The hard part is the half-metre around the plant: window glass that drops to near-freezing on a January night, a radiator pumping out hot dry air, a draught from an opened front door. Move the plant 30 cm and you've usually fixed the problem. Below roughly 18°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Colocasia 'Black Magic' is comparatively hardy (USDA USDA 8-10 (tubers may stay in the ground in zones 8b-10; lift and overwinter corms in colder zones), RHS undefined). Within that range it tolerates a cold dormant spell outdoors; outside it, grow it in a container you can move under cover or overwinter in a cool but frost-free spot. Hardiness assumes an established plant in well-drained soil — a wet, cold root zone kills far more plants than cold air alone.
Humidity for colocasia 'black magic'
Colocasia 'Black Magic' sits happiest at around 60% and above relative humidity. Loves high humidity (60%+). Indoors, run a humidifier, group with other plants, or stand the pot on a wet pebble tray. Low humidity and dry air encourage crispy leaf edges and spider mites. The usual low-humidity tell is crisp brown leaf tips and edges while the soil moisture is fine — a sign the air, not the watering, is the problem. If you need to raise it, the reliable methods are grouping plants together, standing the pot on a tray of damp pebbles (the pot above the waterline, never in it), or running a small humidifier in winter when indoor heating dries the air most. Misting is the least effective — it raises humidity for minutes, not hours.
Colocasia 'Black Magic' temperature & humidity — frequently asked questions
What temperature is best for colocasia 'black magic'?
Colocasia 'Black Magic' grows best between 18-27°C (65-80°F). Keep it out of cold draughts, off freezing windowsills in winter, and away from the hot dry air directly above radiators — the extremes matter far more than the average room temperature.
How cold can colocasia 'black magic' tolerate?
Colocasia 'Black Magic' starts to suffer below roughly 18°C. It tolerates a cold dormant period within USDA USDA 8-10 (tubers may stay in the ground in zones 8b-10; lift and overwinter corms in colder zones), but a wet cold root zone is more dangerous than cold air.
What humidity does colocasia 'black magic' need?
Colocasia 'Black Magic' prefers about 60% and above relative humidity. Loves high humidity (60%+). Indoors, run a humidifier, group with other plants, or stand the pot on a wet pebble tray. Low humidity and dry air encourage crispy leaf edges and spider mites.
How do I raise humidity for colocasia 'black magic'?
Group it with other plants, stand the pot on a tray of damp pebbles (kept above the waterline), or run a small humidifier in winter. Misting only helps for a few minutes, so it is the weakest option for a plant that genuinely needs more humidity.
Can colocasia 'black magic' live outside?
Colocasia 'Black Magic' is rated for USDA zone USDA 8-10 (tubers may stay in the ground in zones 8b-10; lift and overwinter corms in colder zones). Within that range it can stay outdoors; outside it, grow it in a moveable container and protect the roots from a wet, cold winter.
More colocasia 'black magic' care
In the UK? Keeping colocasia 'black magic' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full colocasia 'black magic' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.