Plant care
Lance-leaved Sundewtemperature & humidity
Drosera adelae
More about lance-leaved sundew
Ideal temperature for lance-leaved sundew
Lance-leaved Sundew is comfortable in any room a person is comfortable in, roughly 13-29C (55-85F). 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 13°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Lance-leaved Sundew is comparatively hardy (USDA 9b-11 outdoors (tender tropical; grown as a houseplant or in a greenhouse/terrarium in cooler climates), RHS undefined). 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 lance-leaved sundew
Lance-leaved Sundew sits happiest at around Around 40-70%; tolerates 30% in cooler conditions relative humidity. Higher humidity (50-70%) gives the best dew, but D. adelae adapts to average household humidity near 40% as long as the media stays wet. Below about 70F it copes with humidity as low as 30%; above 75F it needs 50%+ to avoid drying out. The constantly wet tray naturally raises humidity around the plant. 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.
Lance-leaved Sundew temperature & humidity — frequently asked questions
What temperature is best for lance-leaved sundew?
Lance-leaved Sundew grows best between 13-29C (55-85F). 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 lance-leaved sundew tolerate?
Lance-leaved Sundew starts to suffer below roughly 13°C. It tolerates a cold dormant period within USDA 9b-11 outdoors (tender tropical; grown as a houseplant or in a greenhouse/terrarium in cooler climates), but a wet cold root zone is more dangerous than cold air.
What humidity does lance-leaved sundew need?
Lance-leaved Sundew prefers about Around 40-70%; tolerates 30% in cooler conditions relative humidity. Higher humidity (50-70%) gives the best dew, but D. adelae adapts to average household humidity near 40% as long as the media stays wet. Below about 70F it copes with humidity as low as 30%; above 75F it needs 50%+ to avoid drying out. The constantly wet tray naturally raises humidity around the plant.
How do I raise humidity for lance-leaved sundew?
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 lance-leaved sundew live outside?
Lance-leaved Sundew is rated for USDA zone 9b-11 outdoors (tender tropical; grown as a houseplant or in a greenhouse/terrarium in cooler climates). 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 lance-leaved sundew care
In the UK? Keeping lance-leaved sundew warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full lance-leaved sundew care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.