Plant care
Flowering mapletemperature & humidity
Abutilon × hybridum
More about flowering maple
Ideal temperature for flowering maple
Aim for 16-21°C (cooler 13-18°C in winter) (60-70°F (cooler 55-65°F in winter)) 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 16°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Flowering maple is comparatively hardy (USDA 9-11 outdoors; grown as a houseplant or annual in cooler 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 flowering maple
Flowering maple sits happiest at around 40-50% relative humidity. Average room humidity around 40-50% suits it well. In dry winter rooms or near radiators, group it with other plants or stand the pot on a wet-pebble tray; persistent dry air also encourages 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.
Flowering maple temperature & humidity — frequently asked questions
What temperature is best for flowering maple?
Flowering maple grows best between 16-21°C (cooler 13-18°C in winter) (60-70°F (cooler 55-65°F in winter)). 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 flowering maple tolerate?
Flowering maple starts to suffer below roughly 16°C. It tolerates a cold dormant period within USDA 9-11 outdoors; grown as a houseplant or annual in cooler zones, but a wet cold root zone is more dangerous than cold air.
What humidity does flowering maple need?
Flowering maple prefers about 40-50% relative humidity. Average room humidity around 40-50% suits it well. In dry winter rooms or near radiators, group it with other plants or stand the pot on a wet-pebble tray; persistent dry air also encourages spider mites.
How do I raise humidity for flowering maple?
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 flowering maple live outside?
Flowering maple is rated for USDA zone 9-11 outdoors; grown as a houseplant or annual in cooler 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 flowering maple care
In the UK? Keeping flowering maple warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full flowering maple care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.