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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 Appearance

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Garden Pests and Beneficial Natural Enemies

Dean S. Volenberg

Agricultural Educator

UW-Extension





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Striped Cucumber Beetle

Northern Corn Rootworm Beetle

Striped Cucumber Beetle

Western Corn Rootworm Beetle


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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


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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


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Maple Galls

  • Mites or Midges

  • Do not damage tree

  • No control recommended












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Monarch

Viceroy

  • Overwinters

    • Larva in rolled leaf

    • Wisconsin

  • Food Source

    • Poplars

    • Willows

  • Overwinters

    • Mexico

  • Food Source

    • Milkweed


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