Plant care
Three-Colored Lycastetemperature & humidity
Lycaste tricolor
More about three-colored lycaste
Ideal temperature for three-colored lycaste
Three-Colored Lycaste is comfortable in any room a person is comfortable in, roughly 13–28°C (night min 13°C, day max 28°C) (55–82°F (night min 55°F, day max 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 13°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Three-Colored Lycaste is frost-tender (USDA 10b–12, RHS H1b). 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 three-colored lycaste
Three-Colored Lycaste sits happiest at around 55–75% relative humidity. Moderate to high humidity reflecting its lower-elevation rainforest habitat. Supplement indoor humidity with pebble trays or a humidifier. Always maintain good air movement to prevent fungal leaf spot, which this species is susceptible to in stagnant humid air. 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.
Three-Colored Lycaste temperature & humidity — frequently asked questions
What temperature is best for three-colored lycaste?
Three-Colored Lycaste grows best between 13–28°C (night min 13°C, day max 28°C) (55–82°F (night min 55°F, day max 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 three-colored lycaste tolerate?
Three-Colored Lycaste 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 three-colored lycaste need?
Three-Colored Lycaste prefers about 55–75% relative humidity. Moderate to high humidity reflecting its lower-elevation rainforest habitat. Supplement indoor humidity with pebble trays or a humidifier. Always maintain good air movement to prevent fungal leaf spot, which this species is susceptible to in stagnant humid air.
How do I raise humidity for three-colored lycaste?
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 three-colored lycaste live outside?
Three-Colored Lycaste is rated for USDA zone 10b–12 and RHS hardiness H1b. Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More three-colored lycaste care
In the UK? Keeping three-colored lycaste warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full three-colored lycaste care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.