Sudden leaf drop
A plant dropping leaves all at once is usually reacting to a sudden change, not to a slow decline: a move, a cold draught, a sharp change in light, or roots that can no longer supply the leaves.
The most common version of this is moving a potted plant indoors for winter. Leaves yellowing and dropping in the first weeks after the move are often an acclimation reaction to lower light and drier indoor air, and potted citrus and hibiscus are often reported to drop leaves after moving in. A second, separate risk of the same move is carrying pests indoors on the plant, which is why inspection and isolation belong before the move, not after.
This page is about leaves dropping. Flowers or buds dropping without setting fruit is a different symptom with different causes, and is covered on the plant's own guide where it occurs.
General beginner information only — not a substitute for advice from your local agricultural extension service. For edible plants, use only a product that is labelled for that particular edible crop, for indoor use, and follow any harvest interval on its label; try non-chemical steps first, and never use a product that is not labelled for indoor use on that plant.
Checklist to diagnose
- Did the plant move recently — indoors from outdoors, to a new room, or near a door or vent?
- If it just came indoors: did you inspect the leaves, stems, and soil surface for insects first, and is it kept apart from your other houseplants while you watch it?
- Is the mix wet or dry, and does the pot drain freely?
- Are dropped leaves yellow, green, or brown, and are they mostly old or new leaves?
- Is there a cold draught, a heat source, or a sharp light change at the new spot?
- Are roots healthy, or soft and dark when you lift the plant?
Rescue steps
- Before bringing any potted plant indoors, inspect the undersides of leaves, stem joints, and the soil surface for insects, and remove dead leaves and debris from the pot. Keep the plant apart from your other houseplants for about two weeks while you watch for pests that were not visible at first glance; treat any pest you find using the pest pages before it joins the rest of your plants.
- Put the plant back in conditions close to where it was happiest, or as close as you can get, and then leave it alone: repeated moves add stress.
- Expect some leaf drop in the first weeks after moving indoors and do not chase it with extra water or fertilizer; give the plant the brightest indirect light you have, keep conditions steady, and judge recovery by new growth, not by dropped leaves.
- Fix the water first — wet mix means stop watering and drain; dry mix means water slowly and fully — then wait; dropped leaves do not grow back, but new growth is the sign of recovery.
- Move the plant away from cold draughts and direct heat, and change light gradually rather than all at once.
- If roots are soft and dark, follow the root rot page; leaf drop from root damage will not stop until the roots are dealt with.
- Do not feed a dropping plant. Feeding adds stress while the plant has fewer leaves to support.
When to give up
- The plant drops its remaining leaves and the stems turn soft or shrivelled with no new buds.
- Leaf drop continues for weeks after conditions have been stable and roots check out healthy — ask a local extension service to look at the whole plant.
Plants on this site
These plant guides on this site already mention this problem: