Insects and Diseases: University of Illinois Extension

Popular Resources

Girl examining bug with magnifying glass

Bug Review

Learn everything you ever wanted to know about common insects in Illinois

Leaf with evidence of powdery mildew

Focus on Plant Problems

Is disease affecting your plants and trees? Tips for diagnosing and treating common problems

Turf Diseases & Insects

Learn more about the helpful and harmful insects and diseases in your yard

Additional Insect and Disease Resources

Cicadas in Illinois: Learn about the life cycle of the periodical cicadas
Illinois Cooperative Agricultural Pest Survey Program: Resources on insects and invasive pests
Fruit and Vegetable Factsheets
Home, Yard and Garden Pests Newsletter

Educational lessons

Let's Talk about Insects: Join C.P. to learn the benefits of insects, their basic anatomy, and what makes an insect an insect. You can even create a new insect! (Intended for 3rd-5th grade students)