overwinter as pupae protected in cocoons. They can be found under
the scaly plates of bark found on honeylocusts, or in fallen leaves
under the tree.
Life Cycle of Webworms
Silvery gray adult moths hatch out in June and lay eggs on flowers
and foliage of host trees. The eggs generally hatch in mid- to late
June. The larvae web leaflets together and feed on the foliage
protected by the web. The larvae usually feed in large groups, and
enlarge the nest as needed to encompass more foliage for food. I
have seen entire trees enmeshed by these webs. A second generation
hatches out in August. If you control the first generation
successfully, the second should cause little damage.
Prune out and
destroy small infestations within easy reach. If a large percentage
of the tree is affected, that is not practical. Since mimosa
webworms are moths, Bacillus thuringiensis (Bt) provides excellent
control of small larvae. Once they grow to a larger size, over
one-half inch, Bt will not be as effective. Other insecticides
labeled to control mimosa webworm include BioNeem (azadirachtin);
Sevin (carbaryl); Bayer PowerForce Multi-Insect Killer (cyfluthrin);
pyrethrins and piperonyl butoxide; and Captain Jack’s Deadbug Brew (spinosad).
Late blight on
Lawn surface roots
Fungus Gnats - Those annoying little