Check the roots and watering pattern
Roots circling densely around the root ball, water running straight through, or unusually rapid drying can suggest crowding. A single root at a drainage hole is not enough on its own. Gently inspect the root ball when possible, without forcing a firmly stuck plant.
Choose a modest increase
For a healthy plant that needs more room, choose a pot just one size larger with drainage holes and a mix suited to the species. Excess empty soil can stay wet longer than the roots can use it. If the issue is old compacted mix, a larger pot may not be necessary.
Work gently
Active growth is often a good time for routine repotting. Loosen only what is necessary and avoid tearing healthy roots. Keep the plant at a similar depth. If roots are soft, dark and deteriorating, investigate rot separately rather than simply burying the problem in more soil.
Let the plant settle
Water according to the species and the moisture of the new mix, then let excess drain. Keep conditions stable and avoid immediately adding strong fertiliser. Recheck moisture: a fresh pot and mix change how quickly the plant dries.
Should every new plant be repotted straight away?
Not necessarily. Check drainage, root crowding and the state of the mix first. If those are suitable, give the plant time to adjust to your home before adding another change.
