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Plant problems

Plants dropping leaves: causes and fixes

A plant that suddenly drops leaves is usually reacting to a change: a move, a cold draft, a heat wave or a swing in watering. Some leaf loss is normal too, from old lower leaves or from deciduous plants as the days get shorter. Which leaves fall, and whether they're green or yellow when they go, tells you a lot.

Check these first

  1. Think about recent changes. A move, a new window, a cold draft from a door or vent, or a hot spell can all bring on sudden leaf drop.
  2. Feel the soil. Plants shed leaves both when the soil stays soggy and when it's left bone dry for days.
  3. Look at the leaves that fall. Green leaves dropping all at once point to shock; yellow leaves falling one by one point to watering, light or age.
  4. Check under the leaves and along the stems for small insects, sticky residue or fine webbing.
  5. Consider the season. Deciduous plants drop their leaves as the days get shorter, and many plants shed a few old leaves in winter.

Most common causes

The causes our guides to 1,059 plants name most often.

  1. Drought stress

    Named for 376 plants

    How to tell: The leaves become dry and brittle before falling off the stems.

    What to do: Water the plant deeply once the top inch of soil feels dry. Apply a layer of mulch around the base to help hold moisture in the soil.

  2. Temperature shock

    Named for 208 plants

    How to tell: Leaves drop suddenly after a cold snap or a move to a drafty area.

    What to do: Move the plant to a more stable environment away from vents or doors. Protect it from freezing temperatures if it is in a container.

  3. Overwatering

    Named for 174 plants

    How to tell: The leaves turn yellow or mushy before falling off and the soil stays soggy for days.

    What to do: Let the top inch of soil dry out completely before watering again. Ensure your pot has drainage holes so excess water can escape.

  4. Insufficient light

    Named for 131 plants

    How to tell: The plant looks stretched out or leggy, and leaves drop from the bottom up as they lose the ability to photosynthesize.

    What to do: Move the plant to a brighter location with partial shade or bright indirect light. Gradually introduce it to more light over a week to avoid leaf scorch.

  5. Environmental shock

    Named for 119 plants

    How to tell: Leaves fall off shortly after the plant is moved to a new spot or after a sudden temperature change.

    What to do: Keep the plant in a stable location with consistent bright indirect light. Avoid moving it frequently so it can adjust to its surroundings.

  6. Inconsistent watering

    Named for 115 plants

    How to tell: The soil feels bone dry or constantly soggy. Leaves may wilt before falling off.

    What to do: Water when the top inch of soil feels dry. Ensure the pot has drainage holes so excess water can escape.

  7. Root rot

    Named for 97 plants

    How to tell: The leaves turn yellow or brown and fall off in large numbers. The base of the stems may look mushy or dark.

    What to do: Remove the plant from its pot and trim away any black, mushy roots. Repot it into fresh, well draining soil and reduce your watering frequency.

  8. Heat stress

    Named for 86 plants

    How to tell: Leaves wilt and drop during the hottest part of the day even if the soil is damp.

    What to do: Move the plant to a spot with partial shade during the afternoon. Provide extra water during heat waves to keep the roots cool.

Not sure what you're seeing? Try the free photo health check.

Plants most prone to this

Our guides rate it likely for 229 plants. Here are 48 of them, A to Z.

Find your plant

Every plant guide links to its own pages on that plant's problems. Find yours in the A to Z:

Other symptoms

Pest, disease and disorder guides

How often do the guides name each cause, across every symptom? See what goes wrong with plants, counted.

The causes on this page are drawn from our plant guides, which are generated with AI from each plant's care profile. They are general information, not horticultural advice. Read about how we build these guides.