Plant care
Corsican Heathtemperature & humidity
Erica terminalis
More about corsican heath
Ideal temperature for corsican heath
Corsican Heath is comfortable in any room a person is comfortable in, roughly -10°C to 30°C (14°F to 86°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 -10°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Corsican Heath is comparatively hardy (USDA 7-9, RHS H4). Within that range it tolerates a cold dormant spell outdoors; outside it, grow it in a container you can move under cover or overwinter in a cool but frost-free spot. Hardiness assumes an established plant in well-drained soil — a wet, cold root zone kills far more plants than cold air alone.
Humidity for corsican heath
Corsican Heath sits happiest at around Low to moderate relative humidity. Suited to the warm, dry conditions of the Mediterranean; performs well in the drier parts of the UK such as southern and eastern England but should be given a sheltered spot in wetter, cooler regions. 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.
Corsican Heath temperature & humidity — frequently asked questions
What temperature is best for corsican heath?
Corsican Heath grows best between -10°C to 30°C (14°F to 86°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 corsican heath tolerate?
Corsican Heath starts to suffer below roughly -10°C. It tolerates a cold dormant period within USDA 7-9, but a wet cold root zone is more dangerous than cold air.
What humidity does corsican heath need?
Corsican Heath prefers about Low to moderate relative humidity. Suited to the warm, dry conditions of the Mediterranean; performs well in the drier parts of the UK such as southern and eastern England but should be given a sheltered spot in wetter, cooler regions.
How do I raise humidity for corsican heath?
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 corsican heath live outside?
Corsican Heath is rated for USDA zone 7-9 and RHS hardiness H4. Within that range it can stay outdoors; outside it, grow it in a moveable container and protect the roots from a wet, cold winter.
More corsican heath care
In the UK? Keeping corsican heath warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full corsican heath care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.