Vegetable Problems Caused by Insects

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Updated: December 2, 2021

IPM - Prevent, Identify, and Manage Plant Problems

How to ID, prevent, and manage plant problems in Maryland using IPM
no lawn landscape
Updated: November 9, 2021

Spider Mites - Vegetables

Spider mites are small arthropods typically found on the undersides of leaves during hot weather. They cause very tiny white or yellow spots on leaf surfaces and produce strands of silk webbing.
Spider mites
Updated: October 27, 2021

Allium Leafminer

Allium leafminer (ALM) was first observed in Maryland in 2017 and is now widespread through Central and Northern Maryland.
allium leafminer damage ovipositing symptom on foliage
Updated: September 30, 2021

Slugs and Snails - Vegetables

Large ragged holes in leaves may be caused by slugs and snails.
Gray garden slug (Deroceras reticulatum)
Updated: September 30, 2021

Japanese Beetles on Fruits and Vegetables

Japanese beetles on homegrown fruits and vegetables.
Japanese beetle and damage to a blueberry leaf
Updated: September 30, 2021

Cabbage Looper - Vegetables

Ragged holes in the leaves of cole crops, broccoli, Brussels sprouts, cabbage, cauliflower, collards, kale, turnips, etc.
Mature cabbage looper larva. Early instars scrape leaf surfaces; later instars chew pprogressively larger holes. Credit: Russ Ottens, University of Georgia,
Updated: September 30, 2021

Squash Bug - Vegetables

Gray insects on squash
Duct tape used to remove squash bug nymphs
Updated: September 30, 2021

Leafminer - Vegetables

White lines or trails in leaves are a symptom of leafminers.
Leafminer damage on pumpkin leaves
Updated: September 30, 2021

Potato Leafhopper - Vegetables

Puckered, curling leaves may be an indication of leafhopper insects feeding on vegetable plants.
Leafhopper nymph
Updated: September 30, 2021

Southern Corn Rootworm - Vegetables

The larvae of the spotted cucumber beetle can injure vegetable seedlings.
Southern corn rootworm