As with disease, the first thing in dealing with an insect problem is to identify the insect which is causing the problem.  You may need to go out to the lawn or garden in the early evening, at night, or in the early morning to catch the insect in the act of eating your plant.  Once you do, take a photo of it if you don't know what it is, and get help identifying it.  Your county extension agent (find yours here) or local Master Gardener (find yours in WA state here) can help you.

Below please find several resources to address insects. First is a  3 page guide to insect control methods and products  After that are two Fact Sheets: one on Root Weevils, and one on Tent Caterpillars. These recently created with funding from the Rose Foundation for Communities and the Environment. After those you will find  a Fact Sheet on Aphids and other insects.

Root Weevils Fact Sheet 
Click here for a pdf version for downloading

Tent Caterpillars Fact Sheet

Click here for a pdf version you can download.

Aphids Fact Sheet

Click here to download a high resolution pdf version of the following Fact Sheets: 

  1. Aphids, Scale and Whiteflies 
  2. Dandelions and Other Broadleaf Weeds
  3. Moss
  4. Powdery Mildew and Other Fungal Diseases
  5. Quackgrass
  6. Slugs and Snails