Plant care
Pineappletemperature & humidity
Ananas comosus
More about pineapple
Ideal temperature for pineapple
Aim for 18–30°C (65–86°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 18°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Pineapple is frost-tender (USDA 11–12, RHS H1a). 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 pineapple
Pineapple sits happiest at around 40–60% relative humidity. More tolerant of lower humidity than most bromeliads; average household humidity of 40–50% is adequate. In very dry environments (below 30% RH), place on a pebble tray with water. The plant is far less dependent on foliar moisture than epiphytic relatives. 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.
Pineapple temperature & humidity — frequently asked questions
What temperature is best for pineapple?
Pineapple grows best between 18–30°C (65–86°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 pineapple tolerate?
Pineapple starts to suffer below roughly 18°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 pineapple need?
Pineapple prefers about 40–60% relative humidity. More tolerant of lower humidity than most bromeliads; average household humidity of 40–50% is adequate. In very dry environments (below 30% RH), place on a pebble tray with water. The plant is far less dependent on foliar moisture than epiphytic relatives.
How do I raise humidity for pineapple?
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 pineapple live outside?
Pineapple is rated for USDA zone 11–12 and RHS hardiness H1a. Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More pineapple care
In the UK? Keeping pineapple warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full pineapple care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.