Plant care
Gaillardia 'Sun Devil'temperature & humidity
Gaillardia 'Sun Devil'
More about gaillardia 'sun devil'
Ideal temperature for gaillardia 'sun devil'
Gaillardia 'Sun Devil' is comfortable in any room a person is comfortable in, roughly 10-38°C (50-100°F). 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 10°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Gaillardia 'Sun Devil' is comparatively hardy (USDA 3-10, 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 gaillardia 'sun devil'
Gaillardia 'Sun Devil' sits happiest at around 30-50% relative humidity. Prefers dry to moderate humidity. High humidity combined with poor drainage severely shortens plant life. In humid climates, ensure perfect drainage and good airflow to extend longevity. 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.
Gaillardia 'Sun Devil' temperature & humidity — frequently asked questions
What temperature is best for gaillardia 'sun devil'?
Gaillardia 'Sun Devil' grows best between 10-38°C (50-100°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 gaillardia 'sun devil' tolerate?
Gaillardia 'Sun Devil' starts to suffer below roughly 10°C. It tolerates a cold dormant period within USDA 3-10, but a wet cold root zone is more dangerous than cold air.
What humidity does gaillardia 'sun devil' need?
Gaillardia 'Sun Devil' prefers about 30-50% relative humidity. Prefers dry to moderate humidity. High humidity combined with poor drainage severely shortens plant life. In humid climates, ensure perfect drainage and good airflow to extend longevity.
How do I raise humidity for gaillardia 'sun devil'?
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 gaillardia 'sun devil' live outside?
Gaillardia 'Sun Devil' is rated for USDA zone 3-10 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 gaillardia 'sun devil' care
In the UK? Keeping gaillardia 'sun devil' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full gaillardia 'sun devil' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.