How to Keep Your Houseplants Alive in Winter: A Survival Guide

Winter is when most houseplant casualties happen. The combination of shorter days, dry heated air, cold drafts, and well-meaning overwatering creates a perfect storm for plant stress. But with a few adjustments to your care routine, your plants can not only survive winter — they can stay healthy and ready to thrive when spring returns.

Why Winter Is Hard on Houseplants

Understanding the challenges helps you address them:

Less light: Days are shorter and the sun sits lower in the sky, dramatically reducing the light your plants receive
Dry air: Central heating drops indoor humidity to 20-30%, while most houseplants prefer 40-60%
Temperature extremes: Cold drafts from windows and doors, combined with hot air from radiators
Dormancy: Most tropical plants slow their growth significantly in winter

Adjust Your Watering (Less Is More)

The single most important winter care adjustment is watering less.

Why: Plants grow slower in winter and use less water. Meanwhile, lower light and cooler temperatures mean soil stays wet longer. The result? Roots sitting in moisture they can’t absorb, leading to root rot.

What to do:

Extend the gap between waterings by 50-100%
If you watered weekly in summer, try every 10-14 days in winter
Always check soil moisture before watering — your finger is the best tool
Use lukewarm water (cold water shocks tropical roots)
Water in the morning so excess moisture can evaporate during the day
Reduce water amount slightly — you don’t need to saturate the soil as deeply

Maximize Available Light

Winter light levels can drop by 50% or more compared to summer.

Strategies:

Move plants closer to windows — even a foot or two makes a difference
Clean windows inside and out — dirty glass blocks light
Clean plant leaves — dust reduces light absorption
Rotate plants weekly for even light exposure
Consider grow lights for plants struggling the most — even a basic LED grow bulb in a desk lamp helps
Remove sheer curtains from plant windows during winter (you can always add them back in spring when light intensifies)

Combat Dry Air

Heating systems create desert-like conditions indoors. This is a primary cause of brown leaf tips and crispy edges.

Solutions:

Run a humidifier near your plants — the single most effective solution
Group plants together — they create a humid microclimate through transpiration
Use pebble trays — fill a tray with pebbles and water, set pots on top (don’t let pots sit in water)
Move humidity-loving plants to the bathroom — they’ll enjoy shower steam
Misting provides only temporary relief (minutes, not hours) but doesn’t hurt

Plants most affected by dry air:

Plants that handle dry air well:

Snake plants
ZZ plants
Pothos
Succulents and cacti

Watch for Temperature Problems

Tropical plants dislike temperatures below 55°F (13°C) and sudden temperature swings.

Common winter temperature traps:

Cold windowsills — glass gets very cold at night. Pull plants back from windows or use insulating mats
Drafty doors and windows — cold air blasts stress tropical plants
Radiators and heating vents — direct heat dries out plants rapidly
Unheated rooms — spare bedrooms or sunrooms may drop too cold at night

What to do:

Keep plants at least 6 inches from cold windows
Move plants away from heating vents and radiators
Maintain consistent room temperatures between 60-75°F (15-24°C)
Use a thermometer near your plant collection to monitor conditions

Stop Fertilizing (Mostly)

Most houseplants should not be fertilized in winter.

Why: Plants in dormancy can’t use the nutrients. Fertilizer salts build up in the soil, potentially burning roots. It’s like serving a full meal to someone who’s sleeping.

Exceptions:

Plants under grow lights that are actively growing can receive diluted fertilizer
Winter-blooming plants (like Christmas cactus) benefit from light feeding
Plants in very warm, bright conditions that continue growing

Resume fertilizing in early spring when you notice new growth.

Don’t Repot

Winter is the worst time to repot houseplants.

Plants don’t have the energy to recover from root disturbance
Wet soil in larger pots increases root rot risk
Wait until spring when active growth resumes
The only exception: emergency repotting if you discover root rot

Monitor for Pests

Ironically, heated indoor air creates good conditions for some pests.

Winter pest watch list:

Spider mites — thrive in dry, warm air. Look for fine webbing and stippled leaves
Mealybugs — white cottony masses in leaf joints
Scale — brown bumps on stems and leaves
Fungus gnats — attracted to moist soil (often from overwatering)

Check plants regularly and treat infestations promptly. See our pest identification guide for treatment details.

Winter Care Quick Reference

Factor	Summer	Winter
Watering	Every 1-2 weeks	Every 2-4 weeks
Fertilizing	Every 2-4 weeks	None (usually)
Light	Filter intense sun	Maximize all available light
Humidity	Usually adequate	Supplement heavily
Repotting	Ideal time	Avoid unless emergency
Growth	Active	Dormant or slow

The Payoff

Getting your plants through winter successfully means they’ll explode with new growth come spring. Think of winter as a rest period — your plants are conserving energy for the growing season ahead. With patience and these simple adjustments, you’ll have a lush, healthy collection ready to thrive when the days start getting longer.

For more seasonal care advice, check out our winter plant care guide and seasonal care guide.