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Melon · Cucumis melo

What is eating my melon plant leaves?

Melons are a favorite snack for several garden pests, especially cucumber beetles. Start by inspecting the foliage for small insects or holes to identify the culprit.

pests on a plant
Photo: Jules Verne Times Two, CC BY-SA 4.0

Check these first

  1. Check the undersides of leaves for clusters of insects.
  2. Look for small holes or skeletonized leaf tissue.
  3. Watch for beetles moving on the flowers.

Likely causes

  1. Cucumber Beetles

    Most likely

    How to tell: Small yellow beetles with stripes or spots chew holes in the leaves and flowers. They also spread bacterial wilt which kills the vine.

    What to do: Pick the beetles off by hand in the early morning when they are sluggish. Use floating row covers early in the season to prevent them from landing on your young plants.

  2. Aphids

    Possible

    How to tell: Tiny green or black insects cluster on the undersides of leaves, causing them to curl or look distorted. They leave behind a sticky residue called honeydew.

    What to do: Blast the aphids off with a strong stream of water from your hose. If they persist, apply insecticidal soap every 5 to 7 days until they are gone.

When to worry

If you see large numbers of beetles or the plant starts wilting, take action immediately. A few insects are normal, but they can quickly overwhelm a young plant.

Stopping it coming back

Use row covers early in the season and keep the area around your melons free of weeds that might harbor pests.

Not sure which one it is? Photograph your melon.

This page lists the usual causes. Pocket Botanist looks at your actual leaf 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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Questions people ask

Are these beetles harmful to me?
No, cucumber beetles are harmless to humans. They are only a threat to your garden crops.
Should I use chemical pesticides?
Avoid harsh chemicals if possible, as they can kill beneficial pollinators like bees. Stick to manual removal or organic soaps.

More problems with Melon

Back to the Melon 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.