Plant care
Yukon Gold Potatotemperature & humidity
Solanum tuberosum 'Yukon Gold'
More about yukon gold potato
Ideal temperature for yukon gold potato
Temperature kills fewer yukon gold potato 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 15-20°C (tubers form best with soil 15-18°C; growth slows above 27°C) (60-70°F) is fine; the spot you put the plant in matters more. Below roughly 15°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Yukon Gold Potato is frost-tender (USDA 3-9 (frost-sensitive cool-season annual; plant after danger of hard frost), RHS H2 (foliage frost-tender)). It cannot survive a frost, so in most of the US and UK it lives indoors year-round or summers outside and comes back in well before the first autumn frost — once nights drop toward 10-12°C is the cue, not the first frost warning. Acclimate it over a week when moving between indoors and out so the leaves do not shock.
Humidity for yukon gold potato
Yukon Gold Potato sits happiest at around 40-70% relative humidity. Open-air humidity is fine. Prolonged leaf wetness and humid, crowded foliage favour late blight, so space rows for airflow and water at the base. 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.
Yukon Gold Potato temperature & humidity — frequently asked questions
What temperature is best for yukon gold potato?
Yukon Gold Potato grows best between 15-20°C (tubers form best with soil 15-18°C; growth slows above 27°C) (60-70°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 yukon gold potato tolerate?
Yukon Gold Potato starts to suffer below roughly 15°C. It is frost-tender and will be damaged or killed by a frost, so bring it indoors once nights fall toward 10-12°C.
What humidity does yukon gold potato need?
Yukon Gold Potato prefers about 40-70% relative humidity. Open-air humidity is fine. Prolonged leaf wetness and humid, crowded foliage favour late blight, so space rows for airflow and water at the base.
How do I raise humidity for yukon gold potato?
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 yukon gold potato live outside?
Yukon Gold Potato is rated for USDA zone 3-9 (frost-sensitive cool-season annual; plant after danger of hard frost) and RHS hardiness H2 (foliage frost-tender). Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More yukon gold potato care
In the UK? Keeping yukon gold potato warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full yukon gold potato care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.