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Lily · Lilium

Why is my lily losing its leaves?

It is less common for lilies to drop leaves, and this usually happens due to severe environmental changes or pest infestations. Check the underside of the leaves first for any signs of the bright red lily beetle.

Check these first

  1. Inspect the leaves for red beetles or dark larvae.
  2. Look for brown spots that might indicate a fungal infection.
  3. Check if the plant has been moved to a new location recently.

Likely causes

  1. Lily Beetle

    Possible

    How to tell: You will see bright red beetles or their dark, slimy larvae feeding on the leaves. This damage causes the leaves to weaken and eventually fall off.

    What to do: Pick the beetles off by hand and drop them into soapy water. For larger infestations, use a neem oil spray on the foliage every 7 to 10 days.

  2. Botrytis Blight

    Possible

    How to tell: Small brown or reddish spots appear on the leaves, which eventually grow and cause the leaf to wither and drop. This fungal disease thrives in cool, damp conditions.

    What to do: Remove and destroy all affected leaves immediately to stop the spread. Improve air circulation around the plant and avoid getting water on the foliage when you water.

Find out what's wrong with your lily

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

Worry if the leaf drop is sudden and affects many leaves at once, as this indicates a serious pest or disease issue. It is normal for the lowest, oldest leaves to yellow and drop as the lily prepares to go dormant after flowering.

Stopping it coming back

Keep the foliage dry when watering and inspect your plant weekly for any signs of beetles or fungal spots.

Keep your lily healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Will my lily grow new leaves?
Lilies generally do not regrow leaves on the same stem once they have fallen off. Focus on keeping the remaining foliage healthy to support the bulb.
Is leaf drop a sign of overwatering?
It can be, as soggy soil leads to root stress which causes the plant to shed leaves. Always ensure the top inch of soil dries out before watering again.

More problems with Lily

Back to the Lily guide

This article was generated with AI from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.