Days get shorter and the sun sits lower in the sky, so even a spot that was bright all summer gets meaningfully less light in winter. Most houseplants respond by slowing their growth, and that single change is what the rest of your winter care routine needs to follow.

Watering: the biggest winter mistake

A plant that’s growing slower is using far less water than it was in summer, because it isn’t pushing out new leaves or roots that need it. The most common winter mistake is watering on the same schedule you used all summer, which leaves soil wet for much longer than the plant can actually use it. That’s a direct path to root rot. Drop the calendar entirely for the next few months and check the soil before every watering — if you’re not sure whether what you’re seeing is overwatering or underwatering, the soil itself is a more reliable signal than the leaves.

Fertilizing: mostly pause it

Most houseplants are semi-dormant in winter, which means they aren’t actively building new growth and can’t use the nutrients you’d normally feed them. Fertilizer applied during this stretch tends to just sit in the soil as salt buildup instead of getting used, which can burn roots rather than help anything. Cut back significantly on how often you fertilize, or stop altogether for any plant that’s clearly not putting out new leaves. Hold off until you see fresh growth in spring, then resume a normal feeding routine.

Humidity: heating dries the air more than you think

Indoor heating pulls moisture out of the air far more than most people expect, and winter is often when humidity-loving plants — ferns, calatheas, and similar tropical natives — start showing stress that wasn’t there in summer. Crispy edges and browning tips that show up only after the heat kicks on are usually a humidity problem, not a watering one. If you notice this, it’s worth reading up on how to actually raise humidity indoors, since misting alone won’t fix it.

Placement: watch both temperature extremes

Where a plant sits matters more in winter than any other season, because it’s now exposed to two opposite kinds of stress it didn’t face in summer:

• Cold drafts: a windowsill that was fine in July can drop several degrees at night in winter, especially near single-pane glass or a door that gets opened often. Move sensitive plants a foot or two back from the glass, or away from the window entirely overnight.
• Hot, dry vent air: a plant sitting directly in the path of a heating vent gets blasted with hot, extremely dry air every time the heat cycles on, which dries out soil and leaves faster than normal watering and humidity habits can keep up with. Keep plants a few feet clear of any vent.

Both extremes cause similar-looking damage — leaf drop, browning, crisping — so it’s worth tracing back to where the plant actually sits before assuming it’s a watering or feeding problem.

Slower growth is normal — don’t try to fix it

Many houseplants will slow their growth dramatically or stop putting out new leaves entirely for several months over winter. That’s not a sign something is wrong, and it’s not something to correct with more water, more fertilizer, or a grow light run around the clock. It’s the plant doing exactly what it should with less light available. Keep the routine light — check soil before watering, hold back on feeding, watch the spots near windows and vents — and expect growth to pick back up on its own once the days start lengthening again in spring.