Plant care
Discovery Appletemperature & humidity
Malus domestica 'Discovery'
More about discovery apple
Ideal temperature for discovery apple
Aim for -20 to 30°C (fully hardy; needs winter chill to fruit) (-4 to 86°F (fully hardy; needs winter chill to fruit)) 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 -20°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Discovery Apple is comparatively hardy (USDA 4-8 (outdoor orchard tree), RHS H6). 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 discovery apple
Discovery Apple sits happiest at around Outdoor ambient relative humidity. A hardy outdoor tree with no humidity requirement. Discovery has reasonable scab resistance; pruning for an open canopy and good airflow further reduces fungal disease in damp seasons. 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.
Discovery Apple temperature & humidity — frequently asked questions
What temperature is best for discovery apple?
Discovery Apple grows best between -20 to 30°C (fully hardy; needs winter chill to fruit) (-4 to 86°F (fully hardy; needs winter chill to fruit)). 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 discovery apple tolerate?
Discovery Apple starts to suffer below roughly -20°C. It tolerates a cold dormant period within USDA 4-8 (outdoor orchard tree), but a wet cold root zone is more dangerous than cold air.
What humidity does discovery apple need?
Discovery Apple prefers about Outdoor ambient relative humidity. A hardy outdoor tree with no humidity requirement. Discovery has reasonable scab resistance; pruning for an open canopy and good airflow further reduces fungal disease in damp seasons.
How do I raise humidity for discovery apple?
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 discovery apple live outside?
Discovery Apple is rated for USDA zone 4-8 (outdoor orchard tree) and RHS hardiness H6. 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 discovery apple care
In the UK? Keeping discovery apple warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full discovery apple care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.