Repotting gives your houseplant fresh soil, more room for its roots and the opportunity to continue growing. But a bigger pot isn’t always better, and not every plant needs to be repotted every year.

The key is to look at the plant, its roots and the condition of the soil rather than repotting according to a fixed schedule.

When should you repot?

There are several signs that your plant may be ready for repotting.

Roots growing through the drainage holes are an obvious indication, especially when there is very little soil left around the root ball. You may also notice that the pot dries out much faster than before, that growth has slowed down or that the plant has become unstable in its pot.

Sometimes the plant still has enough space, but the soil itself needs replacing. Older potting soil can become compacted over time, making it more difficult for water and air to move through the root zone.

If you’re unsure, gently remove the plant from its pot and take a look at the roots. A healthy, well-developed root system is a much better guide than the calendar.

What is the best time to repot?

Spring and early summer are generally the best times to repot houseplants. Increasing light levels encourage active growth, allowing the plant to establish new roots and adapt to its new pot more quickly.

That doesn’t mean you can never repot at another time of year. If a plant urgently needs more space, the soil is causing problems or the roots are unhealthy, there is no reason to wait several months for the perfect season.

Choose the right pot size

When moving your plant into a larger pot, choose one that is only slightly bigger than the current one.

A pot that is much too large contains a lot of soil compared with the size of the root system. That extra soil holds moisture that the plant cannot yet use, which means the root zone may stay wet for too long.

Giving the roots a little extra room is enough. You can always move the plant into a larger pot again as it continues to grow.

And remember: repotting doesn’t necessarily mean moving to a larger pot. If the plant still has enough space, you can replace some or all of the old soil and return it to the same pot.

Check the roots

Carefully remove the plant from its old pot and inspect the root system.

Healthy roots are generally firm. Don’t worry if the root ball is dense or some roots are circling the inside of the pot — this is often simply a sign that the plant has been growing well.

There is no need to aggressively loosen or break apart a healthy root ball. Handle the roots gently and remove only roots that are clearly dead, damaged or rotten.

Use fresh, suitable soil

Choose a substrate that suits the type of plant you are repotting. Good potting soil should provide the right balance between moisture retention and drainage while still allowing air to reach the roots.

Place some fresh substrate in the new pot, position the plant at approximately the same depth as before and fill around the root ball with fresh soil.

Avoid burying the stem deeper than it was in the original pot unless the plant specifically benefits from this.

Make sure excess water can escape

Good drainage is essential.

Use a pot with drainage holes so excess water can leave the root zone. A drainage layer of stones or clay pebbles at the bottom of a pot does not replace drainage holes.

If you prefer to use a decorative pot without holes, keep the plant in a nursery pot inside it. After watering, make sure no excess water remains standing in the decorative pot.

After repotting

Once your plant is in its new pot, gently settle the soil around the roots without pressing it down too firmly.

After repotting, return the plant to a suitable location and give it some time to adjust. A little temporary stress or slower growth is normal while the roots establish themselves in the fresh substrate.

Avoid making several major changes at once. Repotting already changes the conditions around the root system, so this isn’t the ideal moment to suddenly move the plant to a completely different environment as well.

Bigger isn’t always better

Repotting is about giving your plant what it needs — not simply giving it the biggest possible pot.

Check the roots, choose an appropriate pot size and use fresh, suitable substrate. A little extra room is enough to support new growth while still allowing you to manage watering properly.

And just like with watering, let the plant tell you what it needs rather than relying on a fixed schedule.