How to control these and other web-builders
Those white webs expanding in the crotches of cherry, crabapple and Juneberry trees are made by eastern tent caterpillars. Last summer and early fall, the adults laid their eggs in these favorite trees. As the larvae emerge, they spin a web around the nest, giving it protection from the weather. In the evening, the larvae crawl out from under the web to feed on nearby tender young leaves. Just about the time the sun rises, they return to the web for protection. As the population of larvae increases and the larvae increase in size, so does the webbing of the nest.