Pest and Disease Directory

Cabbage looperCabbage looper. Photo: Whitney Cranshaw, Colorado State University,, author of Garden Insects of North America

Identifying the problem is the first step in finding an earth-friendly way to reduce — or even eliminate — the damage caused by garden pests. Check the list below for the most common causes of garden problems.

Keep in mind that the 95 percent of garden visitors are either helpful or harmless. Beneficial insects include ladybugs, lacewings and many others. Learn more in the article Most Bugs are Good Bugs.

What's more, don't forget the pollinators. Bees, moths, butterflies, wasps and beetles all play a role in pollination. Learn more in the article All About Pollinators.



Small Insect Pests

Beneficial Insects



At or Below Ground

True Bugs


Leaf Symptoms

Root Symptoms

Fruit Symptoms

Multiple Plant Parts

Below: Colorado potato beetle eggs, larvae, and adult beetle.

Potato Beetle Eggs

Potato Beetle Larvae

Potato Beetle Adult


Small Mammals

Large Mammals


Control Measures

Questions and answers

Still have questions? Contact us! Our team of gardening experts is ready to help. Email or call 1-800-876-5520

Last updated: 02/11/2021