Plant care
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree')temperature & humidity
Pilea spruceana 'Silver Tree'
More about pilea 'silver tree' (pilea spruceana 'silver tree')
Ideal temperature for pilea 'silver tree' (pilea spruceana 'silver tree')
Aim for 18-24C (65-75F) 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 18°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') is comparatively hardy (USDA 9-11 (a tender tropical grown as a houseplant in cooler climates; not frost-hardy), 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 pilea 'silver tree' (pilea spruceana 'silver tree')
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') sits happiest at around 50%+ preferred (tolerates ~40-50% household) relative humidity. As a forest-floor tropical it enjoys moderate-to-high humidity and is well suited to bathrooms, kitchens and terrariums. It copes with average household humidity, but very dry, heated winter air causes crispy brown leaf tips and edges. Group it with other plants, stand it on a pebble tray or run a humidifier to keep the textured foliage looking its best. 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.
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') temperature & humidity — frequently asked questions
What temperature is best for pilea 'silver tree' (pilea spruceana 'silver tree')?
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') grows best between 18-24C (65-75F). 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 pilea 'silver tree' (pilea spruceana 'silver tree') tolerate?
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') starts to suffer below roughly 18°C. It tolerates a cold dormant period within USDA 9-11 (a tender tropical grown as a houseplant in cooler climates; not frost-hardy), but a wet cold root zone is more dangerous than cold air.
What humidity does pilea 'silver tree' (pilea spruceana 'silver tree') need?
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') prefers about 50%+ preferred (tolerates ~40-50% household) relative humidity. As a forest-floor tropical it enjoys moderate-to-high humidity and is well suited to bathrooms, kitchens and terrariums. It copes with average household humidity, but very dry, heated winter air causes crispy brown leaf tips and edges. Group it with other plants, stand it on a pebble tray or run a humidifier to keep the textured foliage looking its best.
How do I raise humidity for pilea 'silver tree' (pilea spruceana 'silver tree')?
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 pilea 'silver tree' (pilea spruceana 'silver tree') live outside?
Pilea 'Silver Tree' (Pilea spruceana 'Silver Tree') is rated for USDA zone 9-11 (a tender tropical grown as a houseplant in cooler climates; not frost-hardy). 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 pilea 'silver tree' (pilea spruceana 'silver tree') care
In the UK? Keeping pilea 'silver tree' (pilea spruceana 'silver tree') warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full pilea 'silver tree' (pilea spruceana 'silver tree') care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.