Plant care
Barla's Masdevalliatemperature & humidity
Masdevallia barleana
More about barla's masdevallia
Ideal temperature for barla's masdevallia
Temperature kills fewer barla's masdevallia 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 6-20°C (day 14-20°C, night 6-11°C) (43-68°F (day 57-68°F, night 43-52°F)) is fine; the spot you put the plant in matters more. Below roughly 6°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Barla's Masdevallia is frost-tender (USDA 10-12 (cool greenhouse or specialised terrarium; not outdoor-hardy), RHS H1a (minimum 5-10°C; suitable only for cool glass cultivation in the UK)). 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 barla's masdevallia
Barla's Masdevallia sits happiest at around 80-95% relative humidity. Native cloud forest habitat sustains humidity levels of 90% or more. In cultivation aim for a minimum of 80% at all times. A cool orchid terrarium with small fans, a humid greenhouse, or a refrigerated orchid cabinet is typically required. Crucially, humidity must be paired with moving air to prevent botrytis and crown 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.
Barla's Masdevallia temperature & humidity — frequently asked questions
What temperature is best for barla's masdevallia?
Barla's Masdevallia grows best between 6-20°C (day 14-20°C, night 6-11°C) (43-68°F (day 57-68°F, night 43-52°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 barla's masdevallia tolerate?
Barla's Masdevallia starts to suffer below roughly 6°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 barla's masdevallia need?
Barla's Masdevallia prefers about 80-95% relative humidity. Native cloud forest habitat sustains humidity levels of 90% or more. In cultivation aim for a minimum of 80% at all times. A cool orchid terrarium with small fans, a humid greenhouse, or a refrigerated orchid cabinet is typically required. Crucially, humidity must be paired with moving air to prevent botrytis and crown rot.
How do I raise humidity for barla's masdevallia?
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 barla's masdevallia live outside?
Barla's Masdevallia is rated for USDA zone 10-12 (cool greenhouse or specialised terrarium; not outdoor-hardy) and RHS hardiness H1a (minimum 5-10°C; suitable only for cool glass cultivation in the UK). Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More barla's masdevallia care
In the UK? Keeping barla's masdevallia warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full barla's masdevallia care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.