Plant care
Wild Gingertemperature & humidity
Asarum canadense
More about wild ginger
Ideal temperature for wild ginger
Temperature kills fewer wild ginger 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 -35–27°C (-31–81°F) is fine; the spot you put the plant in matters more. Below roughly -35°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Wild Ginger is comparatively hardy (USDA 3-7, RHS H7). 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 wild ginger
Wild Ginger sits happiest at around Moderate — 50–70% RH relative humidity. Well-suited to the naturally humid understorey of a moist woodland garden; in drier positions, close-planting and a thick mulch layer helps maintain adequate moisture around the foliage. 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.
Wild Ginger temperature & humidity — frequently asked questions
What temperature is best for wild ginger?
Wild Ginger grows best between -35–27°C (-31–81°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 wild ginger tolerate?
Wild Ginger starts to suffer below roughly -35°C. It tolerates a cold dormant period within USDA 3-7, but a wet cold root zone is more dangerous than cold air.
What humidity does wild ginger need?
Wild Ginger prefers about Moderate — 50–70% RH relative humidity. Well-suited to the naturally humid understorey of a moist woodland garden; in drier positions, close-planting and a thick mulch layer helps maintain adequate moisture around the foliage.
How do I raise humidity for wild ginger?
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 wild ginger live outside?
Wild Ginger is rated for USDA zone 3-7 and RHS hardiness H7. 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 wild ginger care
In the UK? Keeping wild ginger warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full wild ginger care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.