Plant care
Mustard Greens 'Golden Streaks'temperature & humidity
Brassica juncea 'Golden Streaks'
More about mustard greens 'golden streaks'
Ideal temperature for mustard greens 'golden streaks'
Aim for 10-24°C (50-75°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 10°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Mustard Greens 'Golden Streaks' is comparatively hardy (USDA Annual; grows in zones 2-11 as a cool-season crop, RHS H5 (hardy young plants tolerate light frost)). 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 mustard greens 'golden streaks'
Mustard Greens 'Golden Streaks' sits happiest at around 40-70% relative humidity. Outdoor ambient humidity is fine. Even soil moisture matters far more than air humidity; dry air alone is rarely a problem for this hardy field green. 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.
Mustard Greens 'Golden Streaks' temperature & humidity — frequently asked questions
What temperature is best for mustard greens 'golden streaks'?
Mustard Greens 'Golden Streaks' grows best between 10-24°C (50-75°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 mustard greens 'golden streaks' tolerate?
Mustard Greens 'Golden Streaks' starts to suffer below roughly 10°C. It tolerates a cold dormant period within USDA Annual; grows in zones 2-11 as a cool-season crop, but a wet cold root zone is more dangerous than cold air.
What humidity does mustard greens 'golden streaks' need?
Mustard Greens 'Golden Streaks' prefers about 40-70% relative humidity. Outdoor ambient humidity is fine. Even soil moisture matters far more than air humidity; dry air alone is rarely a problem for this hardy field green.
How do I raise humidity for mustard greens 'golden streaks'?
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 mustard greens 'golden streaks' live outside?
Mustard Greens 'Golden Streaks' is rated for USDA zone Annual; grows in zones 2-11 as a cool-season crop and RHS hardiness H5 (hardy young plants tolerate light frost). 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 mustard greens 'golden streaks' care
In the UK? Keeping mustard greens 'golden streaks' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full mustard greens 'golden streaks' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.