Plant care
London Pridetemperature & humidity
Saxifraga urbium
More about london pride
Ideal temperature for london pride
Temperature kills fewer london pride 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 -15 to 25°C (5 to 77°F) is fine; the spot you put the plant in matters more. Below roughly -15°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
London Pride is comparatively hardy (USDA 5-8, RHS H5). 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 london pride
London Pride sits happiest at around Moderate (40–70%) relative humidity. Well-suited to the naturally moist conditions of UK and north-western US gardens. No additional humidity management required outdoors. In dry climates, mulch to maintain soil moisture. 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.
London Pride temperature & humidity — frequently asked questions
What temperature is best for london pride?
London Pride grows best between -15 to 25°C (5 to 77°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 london pride tolerate?
London Pride starts to suffer below roughly -15°C. It tolerates a cold dormant period within USDA 5-8, but a wet cold root zone is more dangerous than cold air.
What humidity does london pride need?
London Pride prefers about Moderate (40–70%) relative humidity. Well-suited to the naturally moist conditions of UK and north-western US gardens. No additional humidity management required outdoors. In dry climates, mulch to maintain soil moisture.
How do I raise humidity for london pride?
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 london pride live outside?
London Pride is rated for USDA zone 5-8 and RHS hardiness H5. 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 london pride care
In the UK? Keeping london pride warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full london pride care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.