Key Takeaways
- Reduce watering by 50% - soil stays wet longer in winter
- Move plants to brighter spots (south-facing windows)
- Increase humidity to combat dry heating air
- Stop fertilizing until spring
Why Winter is Challenging for Plants
Winter brings a triple threat to houseplants: reduced light, dry air, and temperature fluctuations. Even experienced plant parents lose plants during these months if they don't adjust their care routine.
The good news? With a few simple changes, you can keep your plants not just surviving, but thriving through winter. Let's break down exactly what you need to do.
Watering in Winter: Less is More
The #1 mistake plant owners make in winter is overwatering. Here's why:
- Plants grow slower (or not at all) in winter, so they use less water
- Lower light = slower photosynthesis = less water uptake
- Cooler temperatures mean soil stays wet longer
Pro Tip
Use a moisture meter or the finger test. Insert your finger 2-3 inches into the soil. Only water if it feels completely dry at that depth.
Winter Watering Schedule by Plant Type
| Plant Type | Summer | Winter |
|---|---|---|
| Tropical (Monstera, Pothos) | Weekly | Every 10-14 days |
| Succulents & Cacti | Every 2 weeks | Monthly or less |
| Ferns & Calatheas | 2x per week | Weekly |
| Snake Plants & ZZ | Every 2-3 weeks | Monthly |
Maximizing Winter Light
Winter days are shorter and the sun sits lower in the sky. Your plants receive significantly less light than in summer, even by a sunny window.
What to Do
- Move plants closer to windows - What was "bright indirect" in summer might be "low light" in winter
- Clean your windows - Dust and grime can block up to 20% of light
- Wipe plant leaves - Dusty leaves can't photosynthesize efficiently
- Consider grow lights - Essential for low-light apartments
- Rotate plants weekly - Ensures even growth
Use BotanAI's Light Meter
Not sure if your plant is getting enough light? Use our free Light Meter feature to measure light levels and get placement recommendations.
Battling Dry Winter Air
Central heating can drop indoor humidity to 20-30% - that's drier than the Sahara Desert! Most houseplants prefer 40-60% humidity.
Signs Your Plants Need More Humidity
- Brown, crispy leaf edges
- Leaves curling inward
- Flower buds dropping
- Spider mite infestations (they love dry air)
Humidity Solutions
Best Options
- Humidifier (most effective)
- Pebble tray with water
- Group plants together
Avoid
- Misting (temporary, can cause fungus)
- Placing plants near heaters
Temperature: Avoiding Cold Stress
Most houseplants are tropical and hate cold. Even brief exposure to temperatures below 50°F (10°C) can cause permanent damage.
Danger Zones to Avoid
- Cold windows - Leaves touching cold glass can freeze
- Drafty doors - Even brief cold blasts stress plants
- Unheated rooms - Especially overnight
- Near heating vents - Hot, dry air damages leaves
Winter Pest Prevention
Contrary to what you might think, winter is prime time for houseplant pests. The dry air weakens plants and creates perfect conditions for spider mites.
Common Winter Pests
- Spider mites - Thrive in dry air, look for webbing
- Fungus gnats - Love overwatered soil
- Scale - Brown bumps on stems and leaves
- Mealybugs - White cottony masses
Prevention tip: Inspect your plants weekly. Catch problems early before they spread to your entire collection.
Frequently Asked Questions
How often should I water my plants in winter?
Should I fertilize my plants during winter?
What temperature is too cold for houseplants?
Ready for Winter
Winter doesn't have to be scary for plant parents. With these adjustments - less water, more light, higher humidity, and consistent temperatures - your plants will sail through the cold months and be ready to explode with growth when spring arrives.
Need help diagnosing a winter plant problem? Download BotanAI and use our AI Plant Doctor to get instant advice, or identify any disease your plants might develop.
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