Garden Insects: Harlequin Bugs


Look for black and red or black and yellow winged beetles that are 1/2 inch long and shaped like a shield. Adults lay tiny eggs in rows or masses on the undersides of leaves that hatch into nymphs. These look like miniature versions of the adult beetles. Both adults and nymphs may overwinter in leaves or yard waste.


Favorite Plants

This insect prefers to feed on horseradish, cabbage, cauliflower, collards, mustard, Brussels sprouts, turnip, kohlrabi and radishes. Depending on the food supply, it may also attack tomatoes, potatoes, eggplants, okra, beans, asparagus, beets, and fruit trees.


Harlequin Bugs cause plants to wilt, turn brown and die by literally "sucking the juices right out of them."

Organic Methods of Control:

Cultural or Mechanical

  • Plow crops under in the fall.

  • Hand pick bugs, nymphs and eggs off of plants.

  • When possible, plant cultivars tolerant of this variety (some radishes and collards).


  • Attract praying mantis to eat adults and nymphs.


  • Spray bugs and nymphs with soap spray.

  • For severe infestations, use pytrethrin sprays as a last resort.
Harlequin Bug

About The Author: Ellen Brown is an environmental writer and photographer and the owner of Sustainable Media, an environmental media company that specializes in helping businesses and organizations promote eco-friendly products and services. Contact her on the web at

Add your voice! Click below to comment. ThriftyFun is powered by your wisdom!

In This Page
Home and Garden Gardening Pest Control Garden Insect GuidesAugust 28, 2006
St. Patrick's Ideas!
Birthday Ideas!
Valentine's Ideas!
Better LivingBudget & FinanceBusiness and LegalComputersConsumer AdviceCoronavirusCraftsEducationEntertainmentFood and RecipesHealth & BeautyHolidays and PartiesHome and GardenMake Your OwnOrganizingParentingPetsPhotosTravel and RecreationWeddings
Published by ThriftyFun.
Desktop Page | View Mobile
Disclaimer | Privacy Policy | Contact Us
Generated 2024-02-13 15:22:38 in 3 secs. ⛅️️
© 1997-2024 by Cumuli, Inc. All Rights Reserved.