BagwormBagworm is an insect which derives its name from the protective bag of silk, leaves and twigs it creates in its larval stage. Since the female Bagworm is capable of producing between 500 and 1000 eggs in a single sac, these insects can cause extensive damage to a multitude of ornamental plants and severely defoliate and kill evergreens, if left untreated. Bagworms are quite visible as dangling brown ornaments from the bare branches of eastern red cedar, other junipers, spruce, arborvitae or douglas fir. Branches of evergreens that have been stripped bare of needles may die. Bagworms may also feed on shade and ornamental trees, fruit trees, ornamental shrubs and perennial flowers. Since deciduous plants loose all of their leaves each year, the defoliation caused by the feeding usually does not kill them. Bagworm caterpillars construct individual silk cases covered with bits of leaves from their last meal. An actively feeding caterpillar will have green leaves at the top of its bag.
If you suspect you have bagworms please call your arborist to request Bagworm treatment that helps minimize damage to landscape plantings.
Bagworm Life Cycle
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