Plant care
Sellow's Sinningiatemperature & humidity
Sinningia sellovii
More about sellow's sinningia
Ideal temperature for sellow's sinningia
Aim for 10–27°C (50–80°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 10°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Sellow's Sinningia is comparatively hardy (USDA 7b-11, RHS H3). 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 sellow's sinningia
Sellow's Sinningia sits happiest at around 40–60% relative humidity. Tolerates average household humidity well; unlike many gesneriads it does not require misting, and wet foliage in cool conditions encourages grey mould. 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.
Sellow's Sinningia temperature & humidity — frequently asked questions
What temperature is best for sellow's sinningia?
Sellow's Sinningia grows best between 10–27°C (50–80°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 sellow's sinningia tolerate?
Sellow's Sinningia starts to suffer below roughly 10°C. It tolerates a cold dormant period within USDA 7b-11, but a wet cold root zone is more dangerous than cold air.
What humidity does sellow's sinningia need?
Sellow's Sinningia prefers about 40–60% relative humidity. Tolerates average household humidity well; unlike many gesneriads it does not require misting, and wet foliage in cool conditions encourages grey mould.
How do I raise humidity for sellow's sinningia?
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 sellow's sinningia live outside?
Sellow's Sinningia is rated for USDA zone 7b-11 and RHS hardiness H3. 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 sellow's sinningia care
In the UK? Keeping sellow's sinningia warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full sellow's sinningia care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.