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Garden Pests and Beneficial Natural Enemies. Dean S. Volenberg Agricultural Educator UW-Extension. Seed Corn Maggot . Colorado Potato Beetle. Flee Beetles. Striped Cucumber Beetle. Northern Corn Rootworm Beetle. Striped Cucumber Beetle. Western Corn Rootworm Beetle. Squash Bug.

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Garden pests and beneficial natural enemies

Garden Pests and Beneficial Natural Enemies

Dean S. Volenberg

Agricultural Educator

UW-Extension





Striped cucumber beetle
Striped Cucumber Beetle

Northern Corn Rootworm Beetle

Striped Cucumber Beetle

Western Corn Rootworm Beetle


Squash bug
Squash Bug

  • Appearance

  • Late June to Early July

  • Damage

  • Cosmetic Damage to developing fruit

  • Overwintering adults can damage seedlings and transplants

  • Vine feeding results in wilted vines


Squash vine borer
Squash Vine Borer

  • Monitor Vines when 900 degree days (base 50) have accumulated

  • Begin Monitoring in Door County on July 1

  • Insecticide applications every 7 days for three weeks will control emerging larvae


Maple galls
Maple Galls

  • Mites or Midges

  • Do not damage tree

  • No control recommended












Monarch

Viceroy

  • Overwinters

    • Larva in rolled leaf

    • Wisconsin

  • Food Source

    • Poplars

    • Willows

  • Overwinters

    • Mexico

  • Food Source

    • Milkweed


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