Plant care
Zantedeschia 'Edge of Night'temperature & humidity
Zantedeschia 'Edge of Night'
More about zantedeschia 'edge of night'
Ideal temperature for zantedeschia 'edge of night'
Temperature kills fewer zantedeschia 'edge of night' plants than you'd think. What kills them is the micro-climate within a normal-temperature room — a leaf pressed against single-glazed winter glass, the hot dry updraft directly above a radiator, the cold blast from an AC vent. The thermostat reading at 15-24°C (60-75°F) is fine; the spot you put the plant in matters more. Below roughly 15°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Zantedeschia 'Edge of Night' is comparatively hardy (USDA 8-10 (lift and store below zone 8), RHS H3). 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 zantedeschia 'edge of night'
Zantedeschia 'Edge of Night' sits happiest at around 40-60% relative humidity. Tolerates average outdoor and indoor humidity. Good airflow matters more than high humidity for these hybrids, helping prevent fungal leaf and rhizome issues. 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.
Zantedeschia 'Edge of Night' temperature & humidity — frequently asked questions
What temperature is best for zantedeschia 'edge of night'?
Zantedeschia 'Edge of Night' grows best between 15-24°C (60-75°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 zantedeschia 'edge of night' tolerate?
Zantedeschia 'Edge of Night' starts to suffer below roughly 15°C. It tolerates a cold dormant period within USDA 8-10 (lift and store below zone 8), but a wet cold root zone is more dangerous than cold air.
What humidity does zantedeschia 'edge of night' need?
Zantedeschia 'Edge of Night' prefers about 40-60% relative humidity. Tolerates average outdoor and indoor humidity. Good airflow matters more than high humidity for these hybrids, helping prevent fungal leaf and rhizome issues.
How do I raise humidity for zantedeschia 'edge of night'?
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 zantedeschia 'edge of night' live outside?
Zantedeschia 'Edge of Night' is rated for USDA zone 8-10 (lift and store below zone 8) and RHS hardiness H3. 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 zantedeschia 'edge of night' care
In the UK? Keeping zantedeschia 'edge of night' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full zantedeschia 'edge of night' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.