David Owens, Extension Entomologist, owensd@udel.edu
Bagworms are a threat to conifer windbreaks. They have begun hatching in Georgetown and will continue hatching for the next two weeks. If trees experienced significant numbers of them last year or you have a lot of ‘new’ bags in trees from last year, prepare to treat in mid-June. Do not wait until you see significant defoliation in August before wanting to treat. By then, it will be too late to do much good.