Plant care
Kangaroo Paw Ferntemperature & humidity
Microsorum diversifolium
More about kangaroo paw fern
Ideal temperature for kangaroo paw fern
Temperature kills fewer kangaroo paw fern 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 17-25°C (tolerates ~15-29°C) (62-77°F (tolerates ~60-85°F)) is fine; the spot you put the plant in matters more. Below roughly 17°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Kangaroo Paw Fern is comparatively hardy (USDA USDA zones 9-11 outdoors (frost-tender); grown as a houseplant elsewhere, 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 kangaroo paw fern
Kangaroo Paw Fern sits happiest at around 50-70% preferred; tolerates ~40% relative humidity. Higher humidity gives the best growth, so a pebble tray, grouping with other plants, or a humidifier helps. Thanks to its tougher, leathery fronds it copes with average household humidity far better than delicate ferns like maidenhair. 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.
Kangaroo Paw Fern temperature & humidity — frequently asked questions
What temperature is best for kangaroo paw fern?
Kangaroo Paw Fern grows best between 17-25°C (tolerates ~15-29°C) (62-77°F (tolerates ~60-85°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 kangaroo paw fern tolerate?
Kangaroo Paw Fern starts to suffer below roughly 17°C. It tolerates a cold dormant period within USDA USDA zones 9-11 outdoors (frost-tender); grown as a houseplant elsewhere, but a wet cold root zone is more dangerous than cold air.
What humidity does kangaroo paw fern need?
Kangaroo Paw Fern prefers about 50-70% preferred; tolerates ~40% relative humidity. Higher humidity gives the best growth, so a pebble tray, grouping with other plants, or a humidifier helps. Thanks to its tougher, leathery fronds it copes with average household humidity far better than delicate ferns like maidenhair.
How do I raise humidity for kangaroo paw fern?
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 kangaroo paw fern live outside?
Kangaroo Paw Fern is rated for USDA zone USDA zones 9-11 outdoors (frost-tender); grown as a houseplant elsewhere. 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 kangaroo paw fern care
In the UK? Keeping kangaroo paw fern warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full kangaroo paw fern care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.