Holly Leafroller
Cydalima perspectalis
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How to spot it
The holly leafroller (Cydalima perspectalis) is the caterpillar of an invasive small moth and the most dangerous pest on holly. The caterpillars eat the leaves bare and leave dense webs and green droppings between the branches. If untreated, a heavy infestation can kill an entire plant within weeks. The caterpillars are recognizable by their green‑black striped pattern and black head.
Prevention
Check your holly trees from April regularly for webs and droppings so you can detect infestation early. Collect individual caterpillars and webs by hand and dispose of them in household waste, not compost. Pheromone traps help you observe moth flight and determine the right time for checks. Loose trimmed, well‑ventilated hedges make it harder for moths to lay eggs and make it easier for you to collect.
Affected plants
These plants in our database are especially susceptible.
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