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["Alan Haigh" <alandhaigh@gmail.com>]

Here in the northeast tent caterpillars are a spring thing, emerging a week or 2 before petal fall.  Fall webworm usually emerges during mid to late summer- I don't think they picked the name.  The tents do considerably more damage in unsprayed trees and the choke-cherries on the edge of my property get completely defoliated while the much smaller webworms don't tend to go beyond their starting branch.