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Home Page > Yardener's Plant Problem Solver > Dealing With Pest Insects > Pest Insects on Trees and Shrubs > Bagworm

Bagworm


Identifying Bagworms
Bagworms disfigure evergreen trees and shrubs by feeding on leaves and needles and girdling twigs. As worm-like larvae they spin silken bags around themselves, to which they attach pieces of the leaves they are eating. They carry this bag with them as they feed. A fully developed bag is about two inches long. These tough, spindle-shaped bags hang from the branches of infested trees like holiday ornaments, so they are easy to spot.

Their Growth Stages
Bagworms are the larvae of moths. Full-grown, these worms measure 1 to 1 1/4 inches. Their bodies are brown with that portion inside the bag lighter than the rest. Adult male moths have black wings, but the females are wingless. The females lay their eggs in fall, and the eggs hatch the following May or June. As the young worms begin to feed, they start doing their damage to tree and shrub foliage. They will continue eating for several months, maybe as late as August in the North. Bagworms are more of a problem in the South than in the North in the eastern part of the US

  • read more:
  • Diagnose Bagworm
  • Solutions for Bagworm
  • Causes of Bagworm
  • Preventing Bagworm Next Year

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