Control Fall Webworms Fall webworm caterpillars are building nests in apple, cherry, plum and many other trees. Unless severe, these infestations cause minor defoliation and damage. If you see many nests in trees, destroy them with a broom handle or stick, or spray Bt on the leaves to kill the emerging caterpillars. The drought and high temperatures in August may be causing deciduous trees to drop their leaves early. Usually it's weak trees or trees that have had their roots disturbed that suffer from these conditions.
Most trees can tolerate an early defoliation and come back next year as long as the rains come.
Others may not make it. Don't decide to remove any trees until you see the final result next summer. Sponsor Offers Enjoy the Outdoors. PreScreened Landscapers backed by the ServiceMagic guarantee Compare what all 3 credit reports say about you . The sooner you start regular weeding, the faster you'll get your weeds under control .