Plant care
Carrot 'Dragon'temperature & humidity
Daucus carota subsp. sativus 'Dragon'
More about carrot 'dragon'
Ideal temperature for carrot 'dragon'
Aim for 16-21°C (61-70°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 16°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Carrot 'Dragon' is comparatively hardy (USDA 3-10 as a cool-season annual; roots tolerate light frost, which sweetens flavour, RHS H4 (roots hardy in the ground over winter under mulch in milder areas)). 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 carrot 'dragon'
Carrot 'Dragon' sits happiest at around 40-70% relative humidity. An adaptable outdoor crop unaffected by air humidity; root quality depends on even soil moisture and a fine, stone-free tilth, not ambient humidity. 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.
Carrot 'Dragon' temperature & humidity — frequently asked questions
What temperature is best for carrot 'dragon'?
Carrot 'Dragon' grows best between 16-21°C (61-70°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 carrot 'dragon' tolerate?
Carrot 'Dragon' starts to suffer below roughly 16°C. It tolerates a cold dormant period within USDA 3-10 as a cool-season annual; roots tolerate light frost, which sweetens flavour, but a wet cold root zone is more dangerous than cold air.
What humidity does carrot 'dragon' need?
Carrot 'Dragon' prefers about 40-70% relative humidity. An adaptable outdoor crop unaffected by air humidity; root quality depends on even soil moisture and a fine, stone-free tilth, not ambient humidity.
How do I raise humidity for carrot 'dragon'?
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 carrot 'dragon' live outside?
Carrot 'Dragon' is rated for USDA zone 3-10 as a cool-season annual; roots tolerate light frost, which sweetens flavour and RHS hardiness H4 (roots hardy in the ground over winter under mulch in milder areas). 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 carrot 'dragon' care
In the UK? Keeping carrot 'dragon' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full carrot 'dragon' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.