Cucumber beetle

Cucumber beetle

Vine chewer

Serious pest

What it is

Small yellow-and-black striped or spotted beetles that chew cucumbers, squash, and melons. Worse, they spread bacterial wilt — a disease that can kill an entire vine in days.

What you'll see

  • Yellow beetles with black stripes or spots on leaves and flowers.
  • Chewed leaves and scarred stems.
  • Vines suddenly wilting and collapsing (bacterial wilt).

How to prevent them

  • Cover young plants with row cover — remove once flowers open so bees can pollinate.
  • Choose wilt-resistant varieties.
  • Hand-pick beetles in the morning when they're slow.