Plant care
Golden Sedumtemperature & humidity
Sedum adolphii
More about golden sedum
Ideal temperature for golden sedum
Aim for 10–30°C (50–86°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 the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Golden Sedum is frost-tender (USDA 9–11, 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 golden sedum
Golden Sedum sits happiest at around 10–50% relative humidity. Thrives in low to moderate humidity typical of most homes. High humidity combined with poor airflow can cause leaf drop and fungal spotting. No misting required or recommended. 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.
Golden Sedum temperature & humidity — frequently asked questions
What temperature is best for golden sedum?
Golden Sedum grows best between 10–30°C (50–86°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 golden sedum tolerate?
Golden Sedum 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 golden sedum need?
Golden Sedum prefers about 10–50% relative humidity. Thrives in low to moderate humidity typical of most homes. High humidity combined with poor airflow can cause leaf drop and fungal spotting. No misting required or recommended.
How do I raise humidity for golden sedum?
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 golden sedum live outside?
Golden Sedum is rated for USDA zone 9–11 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 golden sedum care
In the UK? Keeping golden sedum warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full golden sedum care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.