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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Oak > Webbing on leaves

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Oak > Leaves > Webbing on leaves

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  • Image: Fall webworm 1
  • Image: Fall webworm 2
  • Image: Fall webworm 3

Fall webworm
Hyphantria cunea

  • Produces silken webbing that covers the ends of branches
  • Chews entire sections of leaves, leaving major veins and can defoliate trees in high infestations
  • Yellowish or greenish with long, fine white hairs with two rows of black spots down its back; approx. 1 inch long at maturity
  • Damage occurs from late July through September
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  • Image: Oak webworm 1
  • Image: Oak webworm 2

Oak webworm
Archips fervidanus

  • Larvae eat leaves and can defoliate branches
  • Hide inside rolled leaves which fill with frass and leaf pieces
  • Up to 1 inch long; black head and yellowish to dark green body
  • Black and red oak are preferred hosts

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