OVERWATERING

Overwatering: the problem is wet roots, not the amount in one watering

Overwatering happens when roots stay without enough air for too long. It is usually caused by a pot that dries slowly, low light or poor drainage—not simply by giving a plant a generous drink once.

Houseplant in damp potting soil showing an overwatering check — Heavy soil that stays wet is more useful evidence than a watering schedule on its own.

Recognise the common signs

Yellowing leaves, soft lower stems, slow growth and soil that remains wet for days are typical clues. The plant may still wilt because damaged roots cannot absorb water well. A sour smell, blackened roots or tiny flies around wet soil suggest the issue has been present for longer.

Do not diagnose from one yellow leaf alone. Compare the pot weight, soil moisture, drainage and new growth. A plant in shade may need much less water than the same plant did in a bright room.

What to do today

Stop watering and remove any water left in the saucer or decorative outer pot. Place the plant in bright indirect light with reasonable airflow. Do not put it in hot direct sun to “dry it out”; that can add leaf stress while the roots are weak.

If the soil is only slightly wet and the plant is otherwise firm, let it dry naturally. If it is sodden, smells stale, or the plant is collapsing, inspect the roots. Trim clearly mushy dark roots with clean scissors and repot into fresh, airy mix in a pot with a drainage hole.

Choose a pot and mix that can breathe

A drainage hole is essential, but it is not the whole answer. Dense old compost in a large pot can stay wet around the roots for a long time. Use a pot only modestly larger than the root ball and a mix suited to the plant. Many common houseplants benefit from an airy mix with bark, perlite or other structure; succulents need an even faster-draining mix.

Recovery rule: no fertiliser until the plant shows stable new growth. Fertiliser will not repair water-damaged roots.

Prevent the next cycle

Water according to the plant and the conditions, not a fixed weekly reminder. Test the soil, lift the pot and notice how quickly it dries in its current light. In winter, after a move, or during cloudy weather, most indoor plants use less water. Always discard drainage water after a few minutes.

Quick prevention checklist

Use a pot with a working drainage hole.
Never let a plant sit in a full saucer.
Check below the surface before watering again.
Use brighter indirect light rather than more water to support growth.
Adjust timing as the season and location change.