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Why is my plant dropping leaves?

Plant problems · Updated August 5, 2026 · 2 min read

Short answer

Leaf drop is not a disease — it is the plant cutting its running costs. The pattern gives away the cause: one bottom leaf at a time is usually normal or low light, a sudden mass drop means shock or roots, yellow-then-drop means overwatering, and crisp-then-drop means thirst.

On this page
  1. Which leaves fell?
  2. Shock — common and misread
  3. Draughts and temperature
  4. Watering extremes
  5. Low light
  6. Pests
  7. When to worry

Before panicking, it helps to know what leaf drop is for. Leaves are a plant's most expensive organ. When roots cannot supply enough water, when light is too weak to pay for the foliage, or when the plant is shocked, it sheds. The drop is the consequence, not the problem.

Which leaves fell?

This question narrows the cause faster than anything else.

Pattern Most likely cause
One or two oldest bottom leaves, monthlyNormal renewal
Bottom upwards, slow, stems stretchedLow light
Yellow first, soil wetOverwatering / root rot
Crisp first, soil dust-dryUnderwatering
Sudden, still green, many at onceShock (move, temperature, draught)
Including new leaves, sticky residuePests

Shock — common and misread

New plants shed leaves in their first two to four weeks. Moving from a greenhouse to a living room changes light, humidity and temperature all at once, and shedding is a normal adjustment. Ficus benjamina is famous for it and drops leaves after almost any move.

The same happens after repotting, rearranging a room, or a change of season.

Fix: change nothing. Extra water, feed or another new position all add stress. Keep light steady, water by checking the soil, and wait three to four weeks.

Bloomprint diagnosis screen listing likely causes and a treatment plan for leaf drop
Bloomprint diagnosis screen listing likely causes and a treatment plan for leaf drop

Draughts and temperature

An open window in winter, an air-conditioning vent and the top of a radiator are the three places houseplants most often die. A sudden swing — especially a night below 10 °C — can strip a plant overnight.

Fix: move it away from draughts and direct heat. In winter, bring window-side plants inside the curtain at night; the gap between curtain and glass is far colder than the room.

Watering extremes

Overwatering and thirst can look alike, so the soil decides:

  • Leaves going soft and yellow before falling, soil wet → overwatering. Stop watering, check drainage.
  • Leaves going crisp before falling, pot light → thirst. Stand the pot in water for 20 minutes and let it drink from below.

Low light

A plant that cannot feed its lowest leaves drops them, while stems stretch, the gaps between leaves widen and new leaves shrink. Common in winter as daylight shortens.

Fix: move it closer to the window. In a north-facing room, one metre back from the glass costs roughly half the available light.

Pests

Spider mites, mealybugs and scale weaken a plant until it sheds. Check leaf undersides, the joints where leaf meets stem, and look for sticky residue.

When to worry

  • A few leaves a week, rest of the plant healthy → watch it.
  • Mass drop over a few days → find the cause now; usually shock, temperature or roots.
  • New leaves dropping too → the problem is in the roots. Lift the plant and look.

Frequently asked questions

My new plant is dropping leaves. Should I return it?

Usually not. Shedding in the first two to four weeks is an adjustment response. Keep conditions steady and wait; once new leaves appear, the plant has settled.

Can I leave fallen leaves on the soil?

Better not. Decaying leaves on damp soil breed mould and fungus gnats. Clear them away.

My plant lost every leaf. Is it dead?

Not necessarily. Scratch the stem lightly with a fingernail: green underneath means it is alive. Cut back on water, keep it bright, and many plants resprout from the roots.

Is leaf drop normal in winter?

Some is. Shorter days mean less light and the plant stops supporting some leaves. Mass drop is not normal, and usually means dry heated air, a draught, or summer watering continued into winter.

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