Winter is when most houseplants die — not from cold exactly, but from the combination of drastically lower light, bone-dry indoor air from heating, and people watering on the same summer schedule. Adjust four things and your plants will emerge strong in spring.
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Get the toolkit →1. Cut Watering by 30-50%
Lower light means slower growth and slower soil drying. The number one winter killer is still overwatering. Stick your finger two inches into the soil. If it is damp, do nothing for another week. Tropicals that wanted water every 7 days in summer may now be fine every 12-18 days.
2. Maximize the Light You Have
Move every plant as close as possible to the brightest window without touching cold glass. South and west windows are gold in winter. Rotate plants weekly so all sides receive light. If leaves are reaching or becoming leggy and pale, supplement with a cheap full-spectrum LED grow light on a timer for 10-12 hours.
3. Raise Humidity Without a Humidifier
Grouping plants together creates a microclimate. Place a tray of pebbles and water under pots (pots sit on pebbles, not in water). Mist only in the morning if leaves like it (most do not need daily misting). Keep plants away from heating vents and radiators — the hot dry blast is deadly.
4. Temperature and Drafts
Most houseplants prefer 60-75°F (15-24°C) day and no lower than 55°F at night. Avoid placing plants on windowsills that get icy at night or next to exterior doors. Cold drafts cause black leaf edges faster than low light.
Hold the Fertilizer
Stop or drastically reduce feeding from November through February. The plant is not growing; extra salts just accumulate and burn roots. Resume light feeding when you see new growth in early spring.
Use the AI tool to photograph any winter-stressed plant. It will often detect the "not a plant" false positive less and give useful care plan adjustments for the reduced-light season.
See also: A bare plant in winter is not always dead: Dead or Dormant? The Right Test for Every Houseplant Type explains how to tell.