Control for viburnum beetle if necessary, should be targeted at the larvae in spring. Non-pesticide control. Distribution The native range of the viburnum leaf beetle includes most of Europe. Applications done in the spring will last the whole year and will control all pests that might target your viburnum. Fact!Sheet! More detailed information on viburnum leaf beetle is available at the Cornell University Viburnum Leaf Beetle website. Where possible tolerate populations of larvae and adult beetles; Remove larvae by hand where practical A leaf beetle called the "viburnum leaf beetle" is a pest that has the potential to become a serious problem in nurseries and landscapes in Pennsylvania. The viburnum leaf beetle, first found in North America in 1947 in the Niagara Peninsula of Ontario, Canada, Only spray infested viburnum plants and try to avoid drift onto other plants to preserve pollinators and other beneficial insects in the yard and garden. Back to Leaf Beetles. Adult VLB Photo: Paul Weston, Cornell University. 2007. Selected reference: Weston, P.A., G. Desurmont, and E.R. Hoebeke. Viburnum!Leaf!Beetle! The Problem. (June5,2015) !! Adults and larvae feed on plants belonging to the genus Viburnum, sometimes causing their death. The viburnum leaf beetle. The viburnum leaf beetle (VLB) (Pyrrhalta viburni) [order Coleoptera: family Chrysomelidae] damages a variety of viburnum species and hybrids by feeding and egg-laying activities. Adult beetles occurring later in the season cause less damage, can fly into gardens and are more tolerant of control measures. (Pyrrhaltaviburni)) PreparedbyTomTiddens,)supervisor,) PlantHealthCare ,ChicagoBotanicGarden)! It was first found in upstate New York in 1996. Viburnum beetle (Pyrrhalta viburni) gravid female For the average sized plant, use .5 oz of Adonis in 3-4 gallons of water and apply the mixture to the ground around your plants. In the United States, the viburnum leaf beetle has been found in New York, Pennsylvania, Vermont, New Hampshire, Maine and Ohio. Both adults and larvae feed on the foliage of the host plant; larvae feed on the foliage from mid-spring to early summer and adults feed on the foliage from mid-summer into the fall. The viburnum leaf beetle is a serious defoliator and has destroyed many landscapes in all these areas. VLB (Pyrrhalta viburni), is a recent unintentionally introduced pest of viburnum in North America. 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. Egg caps along a twig. 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