Plant care
Cambodian Sonerilatemperature & humidity
Sonerila cambodiana
More about cambodian sonerila
Ideal temperature for cambodian sonerila
Cambodian Sonerila is comfortable in any room a person is comfortable in, roughly 19–28°C (66–82°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 19°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Cambodian Sonerila is frost-tender (USDA 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 cambodian sonerila
Cambodian Sonerila sits happiest at around 70–90% relative humidity. Native to humid Southeast Asian forests, this species requires very high ambient humidity. Enclosed terrarium cultivation is strongly recommended. Open indoor growing is difficult unless the plant is in a humid microclimate such as a bathroom with natural light. 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.
Cambodian Sonerila temperature & humidity — frequently asked questions
What temperature is best for cambodian sonerila?
Cambodian Sonerila grows best between 19–28°C (66–82°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 cambodian sonerila tolerate?
Cambodian Sonerila starts to suffer below roughly 19°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 cambodian sonerila need?
Cambodian Sonerila prefers about 70–90% relative humidity. Native to humid Southeast Asian forests, this species requires very high ambient humidity. Enclosed terrarium cultivation is strongly recommended. Open indoor growing is difficult unless the plant is in a humid microclimate such as a bathroom with natural light.
How do I raise humidity for cambodian sonerila?
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 cambodian sonerila live outside?
Cambodian Sonerila is rated for USDA zone 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 cambodian sonerila care
In the UK? Keeping cambodian sonerila warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full cambodian sonerila care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.