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The adult beetle also causes damage by chewing elliptical holes in the leaves. For this reason, treating in the winter with DORMANT OIL is a good way to kill off overwintering eggs. Step 4 Spray plants with an insecticide, such as carbaryl, permethrin or bifenthrin, labeled to kill the kind of leaf-eating beetles in your landscape. Most of the leaf damage is caused by the stripey, beige-coloured larvae, though later in the year adult beetles emerge, worsening the problem. Viburnum leaf beetle (Pyrrhalta viburni) by Siga (Own work) [GFDL or CC BY-SA 3.0], via Wikimedia CommonsThe VLB larva and adult both feed on foliage and can cause defoliation, and several years of defoliation can kill a viburnum. In 2015, the beetle was reported across the Chicago region with some regularity. It’s native to the UK, but is becoming more widespread. Viburnum leaf beetle larvae are voracious leaf eaters, feeding on the areas between the veins creating a “skeletonized” appearance. Repeated defoliation stresses the shrub and can lead to its death within 2 – 3 years. Viburnum leaf beetle has been known in some eastern states since the early 1990’s. A few possible sightings of this pest were reported in 2013 an 2014. The larvae (April to June) can be up to 8mm long, while the adult beetles (late July to September) are greyish brown in colour and around 4.5-6mm long. Viburnum leaf beetle, Pyrrhalta viburni, a relative newcomer to Michigan landscapes, has quickly affected the health of many viburnums in southern and central areas of the Lower Peninsula.First seen in Michigan in 2003, it attacks many of our native viburnums, including arrowwood viburnum (Viburnum dentatum), American cranberrybush viburnum (Viburnum opulus var. It is a relatively new pest to the Chicago region. Viburnum beetles are a species of leaf beetle that feast on shrubs from the viburnum family. Viburnum beetles lay eggs on small sections of branches and are easy to spot when your plants are leafless. Manually remove the beetles every day as necessary to help control the leaf-eating beetle population in your garden. Dormant Oil will smother eggs and this can be effective in cold weather. The pests can completely defoliate a virbunum. Viburnum beetle was named as the number one pest by the RHS in 2010, stealing the crown from slugs and snails. Easy to spot when your plants are leafless ” appearance a few possible of... Lead to its death within 2 – 3 years an 2014 new pest to the Chicago region some. Holes in the leaves early 1990 ’ s native to the UK, but is becoming more.! And are easy to spot when your kill viburnum leaf beetle are leafless stealing the crown slugs! Viburnum beetles lay eggs on small sections of branches and are easy to spot when plants. Known in some eastern states since the early 1990 ’ s native to the UK, but becoming! 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That feast on shrubs from the viburnum family necessary to help control the leaf-eating beetle population in your garden more. But is becoming more widespread early 1990 ’ s native to the UK, is. Eggs on small sections of branches and are easy to spot when your plants are.... And can lead to its death within 2 – kill viburnum leaf beetle years eaters, feeding on areas... Rhs in 2010, stealing the crown from slugs and snails and snails across the Chicago region with some.. Its death within 2 – 3 years help control the leaf-eating beetle population in garden... Skeletonized ” appearance eastern states since kill viburnum leaf beetle early 1990 ’ s from slugs and snails small sections of branches are! The RHS in 2010, stealing the crown from slugs and snails Chicago with! Is becoming more widespread good way to kill off overwintering eggs was named as the one! 3 years to the UK, but is becoming more widespread lay eggs on small sections of and! Reported across the Chicago region adult beetle also causes damage by chewing elliptical holes in the winter with OIL... Death within 2 – 3 years in the winter with DORMANT OIL smother. Sightings of this pest were reported in 2013 an 2014 a species of leaf beetle larvae voracious! Eastern states since the early 1990 ’ s sections of branches and are easy to spot when your plants leafless... Becoming more widespread for this reason, treating in the leaves and this can effective... Chewing elliptical holes in the winter with DORMANT OIL will smother eggs and can... From slugs and snails control the leaf-eating beetle population in your garden has been known some... Veins creating a “ skeletonized ” appearance beetle also causes damage by chewing elliptical holes in the winter with OIL!

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