The cheapest method of controlling bagworms on small trees and ornamentals is to hand-pick the bags. |
The heat from that burning will do more permanent damage to the tree than the bagworms ever will. |
Large populations of bagworms can strip plants of their foliage and eventually cause them to die. |
Dispersal of bagworms depends on the hatchlings getting out on a twig and letting out a long strand of silk. |
When fully grown, the bagworms are a dull, dirty, gray with darker markings toward the head. |
So, we typically recommend Kansans spray for bagworms in June, to give all the year's eggs time to hatch. |