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50 Most Common U.S. Tree Pests

A Guide to Insect and Disease Pests of the Forest

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Tree Pest - Hemlock Wooly Adelgid

Tree Pest - Hemlock Wooly Adelgid

Steve Nix/About Forestry

Start with the A Tree Wellness Quiz - The best way to protect a tree from pests including disease and insects is to have a healthy tree. Take this tree wellness quiz to see just how prepared you are to successfully raise a healthy tree.

Identification of Common Tree Disease Pests: A guide to common diseases including root rots, blights, cankers, wilts and decline. Start your review with the most often seen tree diseases in North America:

  • The Common Hardwood Diseases
  • The Common Conifer Diseases
  • The Common Non-infectious Tree Diseases
  • Also review "worst of the worst" tree disease pests in North America:

  • Top 5 Conifer Killers
  • Top 5 Hardwood Killers
  • Identification of Common Tree Insect Pests: A guide to common insects including beetles, borers, caterpillars, weevils and adelgids. Also review "worst of the worst" tree insect pests in North America:

  • Top 5 Conifer Killers
  • Top 5 Hardwood Killers
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