Plant care
Pelargonium crispum 'Variegatum'temperature & humidity
Pelargonium crispum 'Variegatum'
More about pelargonium crispum 'variegatum'
Ideal temperature for pelargonium crispum 'variegatum'
Temperature kills fewer pelargonium crispum 'variegatum' 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 10-24°C (50-75°F) is fine; the spot you put the plant in matters more. Below roughly 10°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Pelargonium crispum 'Variegatum' is frost-tender (USDA 9-11 (overwinter indoors or frost-free below zone 9), 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 pelargonium crispum 'variegatum'
Pelargonium crispum 'Variegatum' sits happiest at around 30-45% relative humidity. Wants dry air and strong airflow. Humid, stagnant conditions cause fungal disease on the crowded small leaves and soft variegated margins; do not mist. 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.
Pelargonium crispum 'Variegatum' temperature & humidity — frequently asked questions
What temperature is best for pelargonium crispum 'variegatum'?
Pelargonium crispum 'Variegatum' grows best between 10-24°C (50-75°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 pelargonium crispum 'variegatum' tolerate?
Pelargonium crispum 'Variegatum' starts to suffer below roughly 10°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 pelargonium crispum 'variegatum' need?
Pelargonium crispum 'Variegatum' prefers about 30-45% relative humidity. Wants dry air and strong airflow. Humid, stagnant conditions cause fungal disease on the crowded small leaves and soft variegated margins; do not mist.
How do I raise humidity for pelargonium crispum 'variegatum'?
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 pelargonium crispum 'variegatum' live outside?
Pelargonium crispum 'Variegatum' is rated for USDA zone 9-11 (overwinter indoors or frost-free below zone 9) 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 pelargonium crispum 'variegatum' care
In the UK? Keeping pelargonium crispum 'variegatum' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full pelargonium crispum 'variegatum' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.