How to Keep Houseplants Alive in the Winter

Winter always feels like a tricky time for my houseplants. The days get shorter, the air gets drier, and keeping them alive suddenly becomes a bit of a challenge. But it doesn’t have to be stressful.

The key to keeping houseplants alive in winter is adjusting how you water, manage light, and control humidity to match the slower growth and cooler temperatures. When you slow down watering, avoid fertilizer for a while, and find better light spots or use grow lights, your plants will make it through just fine.

I’ve found that small changes, like moving plants away from heaters and drafts or wiping dust off their leaves, make a big difference. Taking care of these things helps me keep my indoor jungle happy, even when it’s freezing outside.

Related: 12 Easiest Houseplants to Grow for Beginners

Adjusting Watering for Winter

Winter changes everything about how my houseplants drink. Their growth slows, the soil stays damp longer, and the dry air inside can mess with moisture levels. So I’ve learned to cut back on watering, test soil moisture carefully, and always use water that won’t shock their roots.

In winter, I usually water my plants about one-third less than I do during warmer months. Their metabolism drops with less light and cooler temperatures, meaning they simply need less water. Overwatering is easy to do if I stick to the usual routine, and soggy roots quickly lead to trouble.

Instead of watering on a strict schedule, I always check the soil first. The easiest way is the finger test — I push my finger about two inches deep into the soil. If it’s dry down there, I know it’s time to water; if it’s still damp or cool, I wait a few more days.

Sometimes I use a wooden chopstick or lift the pot to gauge weight. Wet soil feels heavy and soggy, while dry soil is much lighter. These simple checks help me avoid drowning my plants with too much water in winter.

Self-watering pots, or bottom-watering pots, are an excellent idea for the winter. The water sits in the trays underneath the pots, and the roots suck up the water as needed, avoiding any risk of overwatering.

Maximizing Light for Indoor Plants

Winter means less natural sunlight, so I focus on making every bit of light count for my plants. Bright spots, clean windows, and extra lighting help keep them healthy when days are short.

I always move my plants closer to south or west-facing windows because they get the strongest light during the day. Placing plants near these windows boosts their exposure without needing extra equipment. I avoid spots behind thick curtains or furniture that block sunlight.

Rotating plants every week ensures all sides get light, preventing uneven growth. For plants requiring more light, like African violets or succulents, I try to find the best spot with direct or bright indirect sunlight. Even a little shift can make a big difference during winter.

If you’re like me, you don’t have many south-facing windows. I added rotating plant shelves installed next to my windows to give my plants ample sunlight. You can find all sorts of window shelving to give your plants more light throughout the cooler months.

Supplement with Grow Lights

Sometimes, natural light isn’t enough in the winter, when daylight ends at 5 PM. So, if you notice your plants turning sad, consider using LED grow lights for indoor plants. They are energy-efficient and produce the correct light spectrum for plant health.

I set them on a timer for 10 to 14 hours daily since winter days are shorter. This consistent schedule helps plants keep their growth cycle on track. I always keep cords dry and away from water to avoid accidents. Fluorescent lights work too but aren’t as energy-saving, while incandescent bulbs are too hot and wasteful.

Clean Windows to Increase Sunlight

Dirty windows can block a lot of sunlight, so I make sure to clean mine regularly. I wipe down both sides of the glass to get maximum clarity. Even a thin layer of dust or grime can reduce light by a significant margin.

I also gently clean dust off my plant leaves with a damp cloth. Leaves need to breathe and absorb light efficiently, so keeping them dust-free helps photosynthesis. It doesn’t take long and really boosts the light they soak up indoors during overcast winter days.

Managing Temperature and Drafts

Keeping your indoor plants comfy through winter means paying close attention to where you place them and the temperatures around them. Protecting plants from sudden cold air and keeping room temps steady helps avoid stress that could harm them.

Cold drafts can be a real threat to houseplants. I always make sure mine aren’t near windows or doors that let in chilly air. The windows with my rotating shelves are new and fairly energy efficient. Even brief exposure to cold drafts can cause leaf damage or make plants droop.

Indoor plants usually prefer temps between 65°F and 75°F during winter. I try to keep the environment fairly steady because sudden temperature swings can shock my plants.

I avoid placing pots too close to heaters or radiators since the dry heat can dry out soil and leaves rapidly. Using a thermometer in the growing area lets me monitor temps and adjust placement as needed.

If the temperature feels too cold or hot, I move plants to spots where the temp stays more consistent. This steady warmth is key to helping houseplants thrive in the colder months. This is something to consider if you experience prolonged power outages in the winter.

Maintaining Proper Humidity

Keeping the air around your houseplants moist enough is key to their winter survival. Dry indoor air, especially with heaters running, can stress plants, causing crispy leaf edges and slow growth. Luckily, simple tools and tricks help raise humidity effectively.

One reliable option is to run a humidifier near your plants the most reliable way to keep humidity steady, especially in the drier winter months. Small ultrasonic models can increase room humidity by 10–15% within a few hours. It is safe to run daily, but be sure to keep the humidifier clean because they develop mold.

Pebble trays are a great low-maintenance option if you don’t want to buy gadgets. Fill a shallow tray with pebbles and add water just below the stone tops, then set your plant pot on it. As the water evaporates, it boosts moisture right where the plant needs it. I’ve seen a small, but noticeable 3–5% increase around my plants using this method. It works best for small to medium pots placed in groups.

Rotating and Arranging Houseplants

To keep houseplants alive during winter, it’s important to manage how they receive light and airflow. Proper rotation helps plants grow evenly, while good spacing reduces moisture buildup and pest risks.

I make it a habit to rotate my houseplants every week or so. Plants naturally lean toward the light, especially in winter when sunlight is limited. By turning them, I ensure each side gets enough exposure, preventing uneven, leggy growth.

If you don’t rotate, one side can get weak and spindly while the other gets stronger. Use a gentle touch when rotating so you don’t accidentally damage the leaves or stems. A simple 90-degree turn is usually enough. For plants placed near windows, rotating helps balance their shape and keeps them looking fuller and healthier throughout the season.

Crowding houseplants during winter feels cozy, but it often traps moisture and reduces airflow. I always give my plants some breathing room to prevent problems like mold, mildew, and bug infestations.

Spacing them out improves air circulation, helping soil dry evenly and lowering humidity around the leaves. If you cluster plants for humidity, like putting pebble trays or groupings, make sure there’s still enough room for air to flow freely. This simple arrangement step keeps plants healthier and reduces the risk of overwatering and pests during colder months.

Adjusting Fertilization and Repotting

Winter slows down almost everything for houseplants—including their nutrient needs and growth pace. You may think you need to fertilize them to keep houseplants alive in the winter, but it may disrupt their winter dormancy cycles. I’ve found that tuning down fertilization and waiting to repot until warmer months helps my plants avoid unnecessary stress during this quiet season.

During winter, most houseplants enter a dormant or slow-growth phase, so they don’t need as many nutrients. I usually stop fertilizing altogether or cut back to about a quarter of my normal dose. Fertilizing in winter can cause fertilizer salts to build up in the soil, which can damage roots.

If you use liquid houseplant fertilizer, dilute it more than usual and apply it less often—every 6 to 8 weeks instead of monthly.

Key points:

• Cut fertilizer to 0–25% of regular strength
• Avoid fertilizing plants showing minimal growth
• Fertilizer buildup risks root damage during dormancy

Delay Repotting Until Spring

Repotting stresses plants because it disturbs their roots. Since houseplants grow less or not at all in winter, repotting them now can slow recovery and stunt them. I always wait until spring or early summer, when they’re actively growing again, to give them fresh soil and a bigger pot.

There are exceptions if a plant is root-bound and suffering badly. In those cases, gentle repotting can be done in winter but only if you’re careful and the plant is otherwise healthy.

What I follow:

• Repot during active growth (spring/early summer)
• Avoid winter repotting unless roots are severely constrained
• Water well before repotting to minimize shock

Adjusting these care steps has helped keep houseplants alive over winter without causing unnecessary stress or damage.