Autumn Houseplant Care: Light, Watering and Central Heating
Autumn doesn't change anything overnight, but by October it's clear your plants are living a different season. There are fewer hours of light, the sun sits lower in the sky and, in most homes, the heating is about to come on. Growth slows down and your plants need less from you.
Nearly every autumn problem comes from the same place: caring for plants at summer's pace when they've already moved on. This guide covers the few adjustments worth making now, how to get ready for central heating, and the things worth leaving until spring.
🌅 What happens to houseplants in autumn
By the end of October, much of Europe gets several hours less daylight than in June, and the light that does come in is lower and softer. Indoors, temperatures stay fairly steady, so the big change your plants notice is light.
Less light means less energy, and less energy means slower growth. Most tropical houseplants don't go fully dormant, but they take things more slowly: fewer new leaves, slower-growing roots and, crucially, much less water used from the soil. Soil also dries more slowly in cooler, dimmer rooms.
None of this is a problem. It's simply your plants' quieter season, and the best thing you can do is match their pace.
💧 Watering: less often, not less water
This is the single most useful change you can make in autumn, and it comes with an important detail. You don't need to give your plants smaller sips. You need to water them less often.
When you do water, water properly: pour slowly until a little drains out of the bottom, then empty the saucer after about 15 minutes so the roots aren't sitting in water. Then wait longer than you would in summer before watering again.
The easiest way to know when it's time is the finger test. Push a finger 2 to 3 cm into the soil. If it feels dry, water. If it still feels cool and damp, wait a few more days and check again. Lifting the pot helps too: a pot that still feels heavy usually still has water in it.
A few simple rules of thumb:
- Succulents, ZZ plants and snake plants: let the soil dry out almost completely.
- Most foliage plants, like Monsteras, Philodendrons and pothos: water when the top few centimetres are dry.
- Calatheas and ferns: keep the soil lightly moist, never soggy.
Why does a fixed watering day stop working in autumn? Because conditions change from week to week. A sunny spell, a cold snap or the heating coming on can all change how quickly the soil dries. Checking the soil takes ten seconds and is far more reliable than the calendar. And use water at room temperature: cold tap water can be a shock in cooler months.
☀️ Light: move, turn and dust
With less light to go around, a few small moves make a real difference.
- Move plants a little closer to the window. A plant that was happy two metres from the glass in summer may need to be within a metre now. South- and west-facing windows are gentler in autumn, so plants you kept back from strong summer sun can usually move closer.
- Give pots a quarter turn every week. Plants lean towards the light, and turning them keeps growth even.
- Dust the leaves. A layer of dust blocks light. Wipe large leaves gently with a soft, damp cloth once a month.
On Sunday 25 October the clocks go back. It doesn't change how much daylight there is, but darker evenings are a handy yearly reminder to check where your plants stand and give the ones in darker corners a sunnier spot.
🌡️ Getting ready for central heating
Central heating makes homes cosy, but it also dries the air, and hot, dry air is what most tropical plants like least. The good news is that a little preparation before you switch it on goes a long way.
- Keep plants at least a metre from radiators. Never place them on top of a radiator or on a windowsill directly above one.
- Mind the draughts. If you air your rooms by opening the windows wide for a few minutes, move sensitive plants away from the window while you do.
- Group plants together. Plants release moisture through their leaves, so a group creates a slightly more humid pocket around itself.
- Try a pebble tray. Stand pots on a tray of pebbles with a little water, making sure the base of the pot sits above the water line, not in it.
- Use your bathroom and kitchen. If they have good light, they're naturally more humid and perfect for ferns and Calatheas.
Misting gives only a brief boost, so grouping plants and choosing the right spot will do far more.
Some plants take central heating in their stride. ZZ plants, snake plants, Peperomias, cast iron plants and spider plants all cope well with dry indoor air, which makes them great choices for heated living rooms and bedrooms.
🌸 Three things to leave until spring
Autumn is a time to do less. These three jobs are better saved for when growth picks up again.
- Repotting. Roots grow slowly now, and fresh soil stays wet for longer, which isn't what a resting plant needs. Unless the pot has cracked or the plant is toppling over, wait until spring.
- Feeding. Stop fertilising from October until spring. A plant that is barely growing can't use the extra nutrients, and they simply build up in the soil.
- Heavy pruning. Remove any dead or damaged leaves, but save shaping and cutting back for spring, when your plant can recover quickly.
🪴 Plants that barely notice the season
If you'd like plants that carry on looking good whatever the weather does, these are some of the most relaxed about autumn and winter:
- ZZ Plant (Zamioculcas zamiifolia): glossy leaves, stores water in its roots and is happy to be left alone.
- Snake Plant (Sansevieria Laurentii and Superba): upright, architectural and very forgiving with watering.
- Peperomia Obtusifolia: thick, shiny leaves that hold water, ideal for shelves and desks.
- Cast Iron Plant (Aspidistra): the name says it all; it copes with lower light and cooler corners.
- Spider Plant (Chlorophytum comosum): easy, fast-growing and happy with dry air.
- Pothos Marble Queen: trailing green and white leaves that brighten up a darker room.
📅 Quick autumn calendar
| Month | What to do |
|---|---|
| October | Move plants closer to the light · start spacing out watering · stop feeding · move plants away from radiators before the heating goes on |
| November | Water only when the finger test says so · dust the leaves · group humidity lovers together |
| December | Keep plants away from cold windows at night and from draughts · check the soil of plants near heat sources more often · plan any repotting for spring |
Autumn asks less of you and of your plants. Match their slower pace, give them the best light you can and keep them cosy, and they'll be ready to grow again as soon as the days get longer.
Explore our easy-care plants for a home that stays green all winter.
