Plant care
Bleeding heart vinetemperature & humidity
Clerodendrum thomsoniae
More about bleeding heart vine
Ideal temperature for bleeding heart vine
Bleeding heart vine is comfortable in any room a person is comfortable in, roughly 18-29 C (cool winter rest ~13-16 C) (65-85 F (cool winter rest ~55-60 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 18°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Bleeding heart vine is frost-tender (USDA USDA 10-12 (RHS hardiness H1B; grow as a tender houseplant or summer patio plant in cooler climates, bringing it in before temperatures fall below ~10 C / 50 F), RHS undefined). 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 bleeding heart vine
Bleeding heart vine sits happiest at around 50-60%+ relative humidity. Loves high humidity. Below about 50% the foliage can brown at the edges and buds may drop. Group with other plants, stand the pot on a pebble-and-water tray, or run a humidifier. It dislikes dry, draughty air from radiators and vents. 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.
Bleeding heart vine temperature & humidity — frequently asked questions
What temperature is best for bleeding heart vine?
Bleeding heart vine grows best between 18-29 C (cool winter rest ~13-16 C) (65-85 F (cool winter rest ~55-60 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 bleeding heart vine tolerate?
Bleeding heart vine starts to suffer below roughly 18°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 bleeding heart vine need?
Bleeding heart vine prefers about 50-60%+ relative humidity. Loves high humidity. Below about 50% the foliage can brown at the edges and buds may drop. Group with other plants, stand the pot on a pebble-and-water tray, or run a humidifier. It dislikes dry, draughty air from radiators and vents.
How do I raise humidity for bleeding heart vine?
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 bleeding heart vine live outside?
Bleeding heart vine is rated for USDA zone USDA 10-12 (RHS hardiness H1B; grow as a tender houseplant or summer patio plant in cooler climates, bringing it in before temperatures fall below ~10 C / 50 F). Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More bleeding heart vine care
In the UK? Keeping bleeding heart vine warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full bleeding heart vine care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.