If you see an ugly mess like this in your shrubs or trees, you can be sure you have caterpillars. The silky webbing is characteristic of tent caterpillars, webworms, and others--most of them moth larvae. The granular matter in the web is frass--caterpillar poop. Following a frass trail is a good way to spot culprits that are better hidden than these characters. Hornworms, the big, bright green caterpillars with the hook on their tail that are chomping your tomatoes to the ground blend perfectly--but they leave big plops here and there.
Countdown to ArtFest on August 20/21--only a week to go!? Where has the season gone?