Indoor plants need less water during the winter months. It's time to water when the soil is dry an inch or 2 below the surface. It's best to use water that is air temperature so the plant's roots are not shocked from the temperature of cold water. Some drought-tolerant plants such as succulents may not need water at all during the winter.
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Houseplants do best when the temperature in your home is steady, between 60 to 70 degrees F. Keep plants away from drafts near windows and doors, and heat near fireplaces and radiators.
Let There Be Light
Most plants thrive in sunlight, and since there is less sunlight during the colder months, plant relocation may be necessary. Try placing plants in a spot near a south- or west-facing window (as long as there's no cold draft coming in) to get the most sunlight possible.
Put Plants on a Diet
Since your houseplants don't grow nearly as much during the winter, they don't need much when it comes to food. Once spring comes and you start to see new growth, resume your regular fertilizing routine.
Wait on Transplanting
No matter how pretty that new pot is, hold off on transplanting your houseplant until the spring. Winter is a great time to let plants rest.
Watch for Dust Buildup
Since your home is closed up during the winter, keep an eye out for dust buildup on your plant's leaves. Dust buildup makes it difficult for the plant to absorb nutrients. To clean, just use a damp cloth and lightly wipe off the dusty leaves.
Plants need pruning to stay healthy, but hold off on heavy trimming until the spring. Instead, if your plant needs a little help, gently pinch off any soft stems with your fingers.
Consider Artificial Light
If your home doesn't get much sunlight, consider using artificial light. Plants need blue light waves to grow, so check with plant and garden stores to make sure you're getting the right kind of artificial light.
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Beware of Bugs
Even your indoor plants can become susceptible to insects. Watch for scale insects (look for tiny tan dots), whiteflies (which fly off when plants are moved), mealybugs (look like pieces of cotton) and aphids (clusters of red, black or green on new plant growth). Treat any infestations with a gentle, non-toxic insecticide from your local garden center.
Once spring arrives, if you plan on moving a houseplant outdoors, do it carefully. Make sure the possibility of frost has passed. Overnight temperatures should also be above 45 degrees F before houseplants are moved outdoors.