Plant care
Chrysanthemum 'Emperor of China'temperature & humidity
Chrysanthemum 'Emperor of China'
More about chrysanthemum 'emperor of china'
Ideal temperature for chrysanthemum 'emperor of china'
Temperature kills fewer chrysanthemum 'emperor of china' 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 5-18°C (41-65°F) is fine; the spot you put the plant in matters more. Below roughly 5°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Chrysanthemum 'Emperor of China' is comparatively hardy (USDA 5-9, 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 chrysanthemum 'emperor of china'
Chrysanthemum 'Emperor of China' sits happiest at around 40-60% relative humidity. Average outdoor humidity is acceptable. Late-season blooms may be damaged by prolonged autumn rain; grow in a sheltered spot or provide light protection with fleece during wet spells to preserve flowers. 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.
Chrysanthemum 'Emperor of China' temperature & humidity — frequently asked questions
What temperature is best for chrysanthemum 'emperor of china'?
Chrysanthemum 'Emperor of China' grows best between 5-18°C (41-65°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 chrysanthemum 'emperor of china' tolerate?
Chrysanthemum 'Emperor of China' starts to suffer below roughly 5°C. It tolerates a cold dormant period within USDA 5-9, but a wet cold root zone is more dangerous than cold air.
What humidity does chrysanthemum 'emperor of china' need?
Chrysanthemum 'Emperor of China' prefers about 40-60% relative humidity. Average outdoor humidity is acceptable. Late-season blooms may be damaged by prolonged autumn rain; grow in a sheltered spot or provide light protection with fleece during wet spells to preserve flowers.
How do I raise humidity for chrysanthemum 'emperor of china'?
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 chrysanthemum 'emperor of china' live outside?
Chrysanthemum 'Emperor of China' is rated for USDA zone 5-9 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 chrysanthemum 'emperor of china' care
In the UK? Keeping chrysanthemum 'emperor of china' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full chrysanthemum 'emperor of china' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.