Repotting, and when not to bother

It is tempting to repot a new plant the day it arrives, but for most houseplants that is unnecessary and can even set them back while they adjust to a new home. Repotting matters when a plant has outgrown its pot, not on a fixed schedule.

The real signal. Roots coming through the drainage hole, or circling tightly around the inside of the pot when you slide the plant out, mean it is ready for more room. So does soil that dries out within a day or two of watering — a sign there is more root than soil left to hold moisture. A plant that is growing steadily, has room to spare, and is not drying out unusually fast is fine exactly where it is. New leaves, even slow ones, are a better sign of health than an urge to intervene.

When to do it. Spring into early summer, while a plant is actively growing, is the easiest time — it recovers fastest. Repotting a dormant or stressed plant in the middle of winter is more likely to shock it than help it.

How much bigger. Go up one pot size, not several. A pot that is much larger than the root ball holds more soil than the roots can use, which stays wet for longer and raises the odds of overwatering. Two inches of extra diameter is usually enough.

A simple method. Water the plant the day before, so the root ball slides out cleanly. Loosen circling roots gently with your fingers. Add a layer of fresh potting mix in the new pot, center the plant, fill in around the sides, and water once, thoroughly. Skip fertilizer for a few weeks while it settles.

If you are repotting something you picked up here, our benches are sorted by light rather than by pot size, so ask us on your way out — we are happy to point out which of our pots suit which plants.