Repotting intimidates a lot of new plant owners, and understandably so — it feels like surgery. But done correctly, it is one of the kindest things you can do for a plant, giving its roots fresh soil, nutrients and room to grow. The key is knowing when to do it, choosing the right pot, and handling the roots gently. Here is the whole process.

When to repot (and when not to)

Most houseplants need repotting every 12 to 24 months, but watch the plant rather than the calendar. Tell-tale signs it is time:

Roots growing out of the drainage holes or circling visibly on the surface.
Water runs straight through without soaking in — the pot is more root than soil.
The plant dries out unusually fast, needing water every day or two.
Stunted growth despite good light and care, or a top-heavy plant that tips over.
Soil that has broken down into a dense, compacted mass.

The best time to repot is spring or early summer, when the plant is entering active growth and can recover quickly. Avoid repotting a plant that is flowering, newly purchased and still adjusting, or sick — unless you suspect root rot, in which case repotting into fresh soil is part of the rescue.

Myth to retire: a slightly snug pot is not an emergency. Many plants flower better and stay more manageable when slightly root-bound. Repot because the plant needs it, not on a fixed schedule.

Choosing the right pot and size

The single most common repotting mistake is jumping to a pot that is far too big. It seems generous, but a small plant swimming in a huge volume of soil sits in excess moisture that the roots cannot use — and that leads straight to root rot.

The rule: go up just one size — about 2.5–5 cm (1–2 inches) wider in diameter than the current pot. The pot must have a drainage hole. Decorative pots without holes are fine as outer "cachepots," but keep the plant in a plastic nursery pot inside so you can lift it out to water and drain.

Material is a matter of preference and watering habits: terracotta is porous and wicks away moisture (great if you tend to overwater), while glazed ceramic and plastic retain moisture longer (better for thirsty plants or forgetful waterers).

Picking the right soil

Reach for a quality potting mix — never garden soil, which is too dense for containers and may carry pests. Match the mix to the plant:

General foliage plants: a standard indoor potting mix, ideally amended with a handful of perlite for drainage.
Succulents and cacti: a fast-draining cactus mix, or regular mix cut heavily with perlite or coarse sand.
Aroids (monstera, philodendron, pothos): a chunky mix with bark and perlite that mimics their airy, forest-floor roots.
Orchids: a specialized bark-based orchid mix — never standard potting soil.

Step-by-step: repotting in five moves

Water the day before. A moist root ball slides out far more easily and is less stressful for the plant than a dry, crumbly one.
Ease the plant out. Tip the pot sideways, support the base of the stems with one hand, and gently slide the plant free. If it is stuck, run a clean knife around the inside edge — never yank it out by the stem.
Inspect and loosen the roots. Gently tease apart roots that are circling the bottom so they grow outward into fresh soil. Snip away any dark, mushy or foul-smelling roots with clean scissors — these are rotten and should go.
Pot up at the right depth. Add a layer of fresh mix to the new pot. Center the plant so its base sits at the same depth as before — burying the stem can cause rot. Fill in around the sides with fresh soil, pressing gently to remove large air pockets. Leave a 1–2 cm gap below the rim so water does not overflow.
Water thoroughly. Water until it drains from the bottom. This settles the soil around the roots and eliminates remaining air pockets. Top up with a little more mix if the soil sinks.

Skip the old advice about adding gravel or pot shards "for drainage" at the bottom — research shows it actually raises the waterlogged zone closer to the roots. A pot with a drainage hole and good soil is all you need.

Aftercare and avoiding transplant shock

It is normal for a freshly repotted plant to sulk for a week or two — a little drooping or a dropped leaf is the plant adjusting, not dying. Help it settle:

Keep it out of harsh direct sun for the first week; bright indirect light is gentler while roots recover.
Do not fertilize for at least three to four weeks. Fresh potting mix already contains nutrients, and feeding stressed roots can burn them.
Water normally and resist the urge to overwater out of worry — disturbed roots are more vulnerable to rot. Follow the soil, as always (see our watering guide).
Be patient. New growth is the signal the plant has settled into its new home.

Next: got more than one plant's worth of cuttings while you trimmed? Learn how to propagate houseplants for free.