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When and how do you repot a houseplant?

Guidance verified against university horticulture extension sources on 20 August 2026. Sources linked below.

Repot a houseplant when roots show through the drainage holes, growth stalls in the growing season, or the soil dries out within a day or two of watering. Most houseplants need this once every one to five years, not on a fixed yearly schedule. Move up no more than one pot size, about 2 inches larger, and do it while the plant is entering active growth if you can choose the timing.

How do you know a plant needs repotting?

A houseplant shows repotting signals before it shows real damage. Read the roots and the pot, not just the leaves.

How often should you repot?

Few houseplants need repotting more than once a year, and most only need it once every three to five years, according to University of Arkansas Cooperative Extension. A fast-growing plant in an active growth phase reaches root-bound sooner than a slow grower in the same size pot, so let the signs above set the schedule rather than counting years. A plant that is not showing any of those signs does not need repotting yet, even if it has been a while; unnecessary repotting disturbs healthy roots for no gain.

What is the best time of year to repot?

The best time to repot is as the plant is entering active growth, which University of Arkansas Cooperative Extension pins to late winter, as light levels start increasing and the plant wakes from its winter slowdown; Montana State University Extension frames it more broadly as spring, when seasonal growth naturally resumes. Both agree on the underlying reason: repotting into fresh soil encourages new growth, so timing it just before the plant would be growing anyway gives it the best chance to recover fast. If a plant is showing real stress, such as roots pushing the pot apart or water running straight through compacted soil, repot it whenever the problem appears rather than waiting for the ideal season.

What size pot should you use?

Choose a new pot no more than 2 inches larger in diameter than the current one, with drainage holes, according to University of Maryland Extension. Sizing up further feels generous but works against the plant: a much larger pot holds far more soil than the roots can take up, that extra soil stays wet for longer after each watering, and the extended wet period is exactly the condition that leads to root rot. One size up is enough room for a year or more of new growth. This page covers pot size only; for the mix to fill it with and whether terracotta, plastic or ceramic suits your plant, see the full soil and pot guide.

Same plant, two pots: extra soil the roots cannot reach yet is extra time spent wet after every watering.

How do you repot a houseplant, step by step?

1. Water the plant the day before. Moist soil holds together and slides out of the pot more easily than dry soil, and it is gentler on the roots.
2. Remove the plant. Turn the pot upside down, support the base of the plant with one hand, and tap the rim on a table edge until it releases. If the root ball resists, run a knife around the inside edge of the pot to loosen it, per Montana State University Extension.
3. Inspect and lightly trim the roots. Loosen circling roots with your fingers. If the root ball is dense, cut shallow vertical slits, about half an inch into the healthy roots at two to three-inch intervals, and remove any roots that are dead, brown or mushy. If you find a pup or offset with its own roots attached, this is the easiest moment to separate and pot it up on its own; see the full propagation guide for how division and cuttings work for other plants too.
4. Choose the new pot. No more than 2 inches larger in diameter than the old one, with drainage holes (see the pot-size section above).
5. Repot. Add a layer of fresh mix in the base, centre the plant, then fill in around the root ball, gently firming the mix with your fingers to remove large air pockets without compacting it hard.
6. Water thoroughly until it drains from the base, then hold off on the next watering until the top of the soil dries, per University of Maryland Extension.
7. Keep it in indirect light for a few days to reduce transplant shock while the roots settle into the new soil.

Will repotting stress the plant?

Yes, mildly and briefly. Root disturbance and a sudden change in the amount of soil and moisture around the roots commonly cause a few days of drooping, called transplant shock. This is expected and normal, and it settles within one to two weeks of undisturbed, normal care; avoid fertilising during that recovery window, since the plant is not actively taking up nutrients yet. See the full wilting and drooping guide if the drooping does not ease after two weeks, since that points to a different cause instead.

FAQ

How do I know if my plant needs repotting?

Look for roots showing through the drainage holes or circling the surface, soil that dries out within a day or two of watering, stalled growth in the growing season despite regular feeding, salt crust on the soil surface, or a plant that has become top-heavy and tips over. Any one of these is a repotting signal.

How often should you repot a houseplant?

Few houseplants need repotting more than once a year, and most only need it once every three to five years. Fast-growing plants in active growth reach root-bound sooner than slow growers, so let the plant's own signs set the schedule rather than a fixed calendar.

What size pot should I repot into?

No more than 2 inches (about 5cm) larger in diameter than the current pot, with drainage holes. A pot that is much larger holds far more soil than the roots can use, which stays wet too long and raises the risk of root rot.

Related guides

Sources

• University of Arkansas Cooperative Extension Service, Repotting Houseplants: how to tell when your plant needs repotting
• University of Maryland Extension, Potting and Repotting Indoor Plants
• Montana State University Extension, Ask Steward: How do I repot a houseplant