Plant care
White Frangipanitemperature & humidity
Plumeria alba
More about white frangipani
Ideal temperature for white frangipani
White Frangipani is comfortable in any room a person is comfortable in, roughly 13–38 °C (55–100 °F). The mistakes are micro-climates: a north-facing window on a frosty night, a south-facing windowsill in a summer heatwave, the standing draught between an opened kitchen door and the radiator behind it. Read the room around the plant, not the thermostat. Below roughly 13°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
White Frangipani is frost-tender (USDA 10b–12, RHS H1a). It cannot survive a frost, so in most of the US and UK it lives indoors year-round or summers outside and comes back in well before the first autumn frost — once nights drop toward 10-12°C is the cue, not the first frost warning. Acclimate it over a week when moving between indoors and out so the leaves do not shock.
Humidity for white frangipani
White Frangipani sits happiest at around 30–65% relative humidity. Tolerates a wide humidity range; average household levels are fine. High humidity combined with poor air circulation can encourage fungal diseases including frangipani rust. Good airflow around the canopy is more important than humidity management per se. 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.
White Frangipani temperature & humidity — frequently asked questions
What temperature is best for white frangipani?
White Frangipani grows best between 13–38 °C (55–100 °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 white frangipani tolerate?
White Frangipani starts to suffer below roughly 13°C. It is frost-tender and will be damaged or killed by a frost, so bring it indoors once nights fall toward 10-12°C.
What humidity does white frangipani need?
White Frangipani prefers about 30–65% relative humidity. Tolerates a wide humidity range; average household levels are fine. High humidity combined with poor air circulation can encourage fungal diseases including frangipani rust. Good airflow around the canopy is more important than humidity management per se.
How do I raise humidity for white frangipani?
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 white frangipani live outside?
White Frangipani is rated for USDA zone 10b–12 and RHS hardiness H1a. Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More white frangipani care
In the UK? Keeping white frangipani warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full white frangipani care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.