Mimosa webworms feed on honeylocust in the north, especially the yellower varieties of thornless honeylocust. Bad news is the adult moth is attracted to old webs, so webworms will continue to be a problem on this tree. Over time the tree is weakened and then other pests arrive to help to kill it off.
Planting the greener varieties of honeylocust like 'Shademaster','Skyline', or 'Moraine' are less susceptible.
web worms by: Donalda
The best way we have found to handle these creatures without the use of pesticides is to nip the branch with the web and the brown leaves right off the tree.If the tree is too tall,use a water hose with lots of pressure to break the web apart so the birds and other predators can get at them. We had chickadees and goldfinches feeding off them in our flowering crab once the web was broken.