Plant care
Viguier's Angraecumtemperature & humidity
Angraecum viguieri
More about viguier's angraecum
Ideal temperature for viguier's angraecum
Temperature kills fewer viguier's angraecum 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 14–30 °C (day 20–30 °C; night minimum 14 °C) (57–86 °F (day 68–86 °F; night minimum 57 °F)) is fine; the spot you put the plant in matters more. Below roughly 14°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Viguier's Angraecum is frost-tender (USDA 10–12, 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 viguier's angraecum
Viguier's Angraecum sits happiest at around 50–70% relative humidity. Tolerates a somewhat drier atmosphere (50%) compared to lower-altitude Angraecum species, reflecting its montane habitat. Aim for 60–70% during active growth; avoid misting the foliage directly as water trapped in leaf axils can cause rot. 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.
Viguier's Angraecum temperature & humidity — frequently asked questions
What temperature is best for viguier's angraecum?
Viguier's Angraecum grows best between 14–30 °C (day 20–30 °C; night minimum 14 °C) (57–86 °F (day 68–86 °F; night minimum 57 °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 viguier's angraecum tolerate?
Viguier's Angraecum starts to suffer below roughly 14°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 viguier's angraecum need?
Viguier's Angraecum prefers about 50–70% relative humidity. Tolerates a somewhat drier atmosphere (50%) compared to lower-altitude Angraecum species, reflecting its montane habitat. Aim for 60–70% during active growth; avoid misting the foliage directly as water trapped in leaf axils can cause rot.
How do I raise humidity for viguier's angraecum?
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 viguier's angraecum live outside?
Viguier's Angraecum is rated for USDA zone 10–12 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 viguier's angraecum care
In the UK? Keeping viguier's angraecum warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full viguier's angraecum care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.