Winter Houseplant Care Guide
Short days, dry indoor air, and cold drafts make winter the hardest season for houseplants. Learn how to adjust watering, light, and humidity to keep plants healthy until spring.
From roughly November through February in most of the US, houseplants slow down dramatically. Light intensity drops, days shorten to 9-10 hours, and growth all but stops for many tropicals. Indoor heating pushes relative humidity below 30 percent, while drafts from windows and doors expose leaves to cold air they never see in summer.
The goal in winter is not to push growth but to keep plants stable and stress-free. That means watering far less, holding off on fertilizer, maximizing the weak light you have, and protecting plants from both cold drafts and the hot, dry air near heat sources.
Step by step
- 1Cut back on watering
Check soil before watering and let it dry more than you would in summer. Push a finger 2 inches deep; for most plants, only water when that depth is dry. Many plants go from weekly to every 2-3 weeks.
- 2Move plants to brighter spots
Relocate plants closer to south- or west-facing windows to capture weaker winter light, and wipe dust off the leaves and the glass so more light gets through.
- 3Stop fertilizing
Most houseplants are semi-dormant and cannot use the nutrients. Pause feeding from roughly late fall until you see new growth in spring to avoid salt buildup and root burn.
- 4Protect from drafts and heat
Move plants away from cold windows, exterior doors, radiators, and heating vents. Keep foliage from touching cold glass overnight.
- 5Raise humidity
Group plants together, use pebble trays, or run a humidifier to hold humidity around 40-60 percent and prevent crispy brown leaf tips.
- 6Watch for pests
Inspect undersides of leaves weekly. Warm, dry indoor air encourages spider mites and scale, so catch infestations early before they spread.
Why plants struggle in winter
The biggest killer in winter is overwatering. Plants use far less water when growth slows, but many owners keep watering on their summer schedule. Soil stays wet for days, oxygen is driven out of the root zone, and root rot sets in. A plant that drank weekly in July may only need water every 2-3 weeks in January.
The second problem is dry air. Forced-air furnaces and radiators can drop indoor humidity to 20-30 percent, well below the 40-60 percent most tropicals prefer. Leaf tips turn brown and crispy, and pests like spider mites thrive in the warm, dry conditions.
Light and placement
The sun sits lower and weaker in winter, and overcast days are common. Move plants closer to your brightest windows, ideally south- or west-facing, and clean the glass so you are not filtering out precious light. A plant that was happy three feet from a window in summer may need to be right against it now.
Keep foliage from touching cold glass, which can chill or even freeze leaf tissue overnight. If natural light is truly inadequate, a basic LED grow light on a timer for 10-12 hours a day will keep plants from getting leggy.
Temperature and humidity
Most houseplants are comfortable between 65 and 75 F during the day and tolerate a drop to about 60 F at night. Keep them away from cold drafts near doors and single-pane windows, and equally away from the dry, hot blast of radiators and heating vents, which can scorch foliage and dry soil unevenly.
Raise humidity by grouping plants together, setting pots on pebble trays filled with water, or running a small room humidifier near your most sensitive plants such as calatheas and ferns. Misting offers only brief relief and is not a reliable substitute.
- Water in the morning so soil can use the daytime warmth and excess moisture evaporates before the colder night.
- Use room-temperature water; ice-cold water can shock tropical roots.
- Hold off on repotting until spring unless a plant has root rot that must be addressed.
- Skip propagating now; cuttings root slowly and often rot in low light and cold.
FAQ
How often should I water houseplants in winter?
There is no fixed schedule. Check the soil first and water far less than in summer. Many plants that needed weekly watering will go 2-3 weeks between drinks because they use less water in low light and cool temperatures.
Should I fertilize houseplants in winter?
Generally no. Most houseplants are semi-dormant and cannot use the nutrients, so feeding risks salt buildup and root burn. Resume feeding when you see fresh growth in spring.
Why are my plant's leaf tips turning brown in winter?
Crispy brown tips usually signal low humidity from indoor heating, or salt buildup from fertilizer. Raise humidity to 40-60 percent with a humidifier or pebble tray and flush the soil with plain water.