Plant care
Copal Burseratemperature & humidity
Bursera fagaroides
More about copal bursera
Ideal temperature for copal bursera
Aim for 5–38°C (41–100°F) on the thermostat and you've handled the easy part. The hard part is the half-metre around the plant: window glass that drops to near-freezing on a January night, a radiator pumping out hot dry air, a draught from an opened front door. Move the plant 30 cm and you've usually fixed the problem. Below roughly 5°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Copal Bursera is frost-tender (USDA 9b–11, RHS H2). 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 copal bursera
Copal Bursera sits happiest at around 10–40% relative humidity. Native to the seasonally dry tropical forests of Mexico and well adapted to low humidity. Ordinary indoor ambient humidity is fine. Avoid high humidity during the dormant winter period, which can encourage fungal issues on the peeling bark. 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.
Copal Bursera temperature & humidity — frequently asked questions
What temperature is best for copal bursera?
Copal Bursera grows best between 5–38°C (41–100°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 copal bursera tolerate?
Copal Bursera starts to suffer below roughly 5°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 copal bursera need?
Copal Bursera prefers about 10–40% relative humidity. Native to the seasonally dry tropical forests of Mexico and well adapted to low humidity. Ordinary indoor ambient humidity is fine. Avoid high humidity during the dormant winter period, which can encourage fungal issues on the peeling bark.
How do I raise humidity for copal bursera?
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 copal bursera live outside?
Copal Bursera is rated for USDA zone 9b–11 and RHS hardiness H2. Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More copal bursera care
In the UK? Keeping copal bursera warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full copal bursera care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.