Plant care
Canna 'Pink Sunburst'temperature & humidity
Canna 'Pink Sunburst'
More about canna 'pink sunburst'
Ideal temperature for canna 'pink sunburst'
Aim for 18-32°C (64-90°F) 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
Canna 'Pink Sunburst' is comparatively hardy (USDA 8-11 (lift in zones 7 and colder), RHS H3). 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 canna 'pink sunburst'
Canna 'Pink Sunburst' sits happiest at around 50-70% relative humidity. Higher humidity reduces leaf edge browning, which can affect variegated forms more than plain green cannas. Mulch and keep plants well watered to buffer against dry air. 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.
Canna 'Pink Sunburst' temperature & humidity — frequently asked questions
What temperature is best for canna 'pink sunburst'?
Canna 'Pink Sunburst' grows best between 18-32°C (64-90°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 canna 'pink sunburst' tolerate?
Canna 'Pink Sunburst' starts to suffer below roughly 18°C. It tolerates a cold dormant period within USDA 8-11 (lift in zones 7 and colder), but a wet cold root zone is more dangerous than cold air.
What humidity does canna 'pink sunburst' need?
Canna 'Pink Sunburst' prefers about 50-70% relative humidity. Higher humidity reduces leaf edge browning, which can affect variegated forms more than plain green cannas. Mulch and keep plants well watered to buffer against dry air.
How do I raise humidity for canna 'pink sunburst'?
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 canna 'pink sunburst' live outside?
Canna 'Pink Sunburst' is rated for USDA zone 8-11 (lift in zones 7 and colder) and RHS hardiness H3. 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 canna 'pink sunburst' care
In the UK? Keeping canna 'pink sunburst' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full canna 'pink sunburst' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.