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Lily Beetles

Size: 6–8mm

Identification, life cycle, damage signs, and treatment guide.

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Identification

Bright scarlet-red beetle with a black head and legs, found on lilies and fritillaries; larvae are dull orange-brown, covered in their own excrement.

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Life Cycle

Overwinter as adults in soil, emerge in spring to lay eggs on leaf undersides; larvae feed for several weeks before pupating.

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Damage Signs

Adults and larvae chew leaves, buds, and flowers, rapidly defoliating plants if left unchecked.

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Treatment

Hand-pick adults and larvae regularly, checking leaf undersides. Beetles drop and play dead when disturbed, so catch them below the plant.

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Prevention

Inspect lilies frequently from early spring and remove eggs and larvae before populations build.

Lily Beetles — Plant Pest Identification & Control | GreenScout