Plant care
King Alfred Daffodiltemperature & humidity
Narcissus pseudonarcissus 'King Alfred'
More about king alfred daffodil
Ideal temperature for king alfred daffodil
King Alfred Daffodil is comfortable in any room a person is comfortable in, roughly −25°C to 20°C (−13°F to 68°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 25°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
King Alfred Daffodil is comparatively hardy (USDA 3-8, RHS H7). 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 king alfred daffodil
King Alfred Daffodil sits happiest at around Low to moderate (40–65% RH) relative humidity. Fully hardy in temperate outdoor conditions and adapted to variable humidity. No special requirements. Ensures good air circulation to reduce risk of Botrytis and other fungal issues, especially during prolonged damp springs. 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.
King Alfred Daffodil temperature & humidity — frequently asked questions
What temperature is best for king alfred daffodil?
King Alfred Daffodil grows best between −25°C to 20°C (−13°F to 68°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 king alfred daffodil tolerate?
King Alfred Daffodil starts to suffer below roughly 25°C. It tolerates a cold dormant period within USDA 3-8, but a wet cold root zone is more dangerous than cold air.
What humidity does king alfred daffodil need?
King Alfred Daffodil prefers about Low to moderate (40–65% RH) relative humidity. Fully hardy in temperate outdoor conditions and adapted to variable humidity. No special requirements. Ensures good air circulation to reduce risk of Botrytis and other fungal issues, especially during prolonged damp springs.
How do I raise humidity for king alfred daffodil?
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 king alfred daffodil live outside?
King Alfred Daffodil is rated for USDA zone 3-8 and RHS hardiness H7. 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 king alfred daffodil care
In the UK? Keeping king alfred daffodil warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full king alfred daffodil care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.