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Horticulture diseases and pests

Leaf destroyed by insect

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Publications

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Elderberry Insect and Disease Management

Publication date: Feb. 1, 2021

This guide is the first known spray schedule to be developed for insect and disease control for field-grown elderberry in Missouri. Pesticide products labeled for greenhouse or high-tunnel-grown plants differ from those labeled for field-grown ...

Biology and Management of Japanese Beetle

Publication date: July 1, 2020

Japanese beetle were accidentally introduced from Asia to the eastern United States in 1916. Since then, they have established populations in 28 states with detections in an additional 13, becoming a primary insect pest species in many agricultural ...

Bees and Wasps

Publication date: April 1, 2019

The ability to sting, coupled with their great mobility, makes bees and wasps some of the most feared of all insects. Many species of bees and wasps are present in every geographic region of Missouri. These species vary in aggressiveness and other ...

Missouri Weed Seeds

Publication date: Nov. 1, 2018

Positive identification of pests, including weeds, is the first step in a sound integrated pest management program. Knowledge of plant morphological features, such as leaf and stem shape, flower type and color, and the presence of hairs make ...

Tree Pests: Emerald Ash Borer

Publication date: May 1, 2018

Emerald ash borer (Agrilus planipennis) is an exotic, invasive, wood-boring insect that infests and kills native North American ash trees, both in forests and landscape plantings. Just like the Dutch elm disease that killed our native American elm ...

Midwest Fruit Pest Management Guide: 2018

Publication date: Jan. 1, 2018

Revised annually, this guide provides pest management recommendations for commercial tree fruit, small fruit, and grape producers in Arkansas, Illinois, Indiana, Iowa, Kansas, Kentucky, Minnesota, Missouri, Nebraska, Ohio, Oklahoma, West Virginia and ...

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Resources

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ID Weeds app (App Store)

ID Weeds allows you to search for weeds by their common or Latin name, view a list of weeds, or identify weeds based on characteristics. It presents weed details and photos. By the MU Division of Plant Sciences, this is the iPhone and iPad version.

Managing the Japanese Beetle: A homeowner's Handbook (PDF)

The Japanese beetle (Popillia japonica Newman) is a highly destructive plant pest of foreign origin. It was first found in the United States in a nursery in southern New Jersey in 1916. In its native Japan, where the beetle’s natural enemies keep ...

Asian Longhorned Beetle (USDA APHIS)

Find out more about the Asian longhorned beetle on the U.S. Department of Agriculture's Animal and Plant Health Inspection Service website.

Don't Move Firewood website

Find out how far is too far to move firewood to avoid transporting invasive pests and diseases to new areas.

Emerald Ash Borer University

Emerald Ash Borer University is the collaborative effort of the USDA Forest Service, Michigan State University, Purdue University, and Ohio State University. EAB University serves as the nation's clearinghouse on all aspects of this destructive ...

Herbicide Injury ID app (App Store)

Herbicide Injury ID aids in the diagnosis of herbicide injury. Search by visible plant symptoms, herbicide trade names, active ingredients, or herbicide site-of-action numbers. By MU Extension Weed Science, this is the iPhone and iPad version.

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Featured programs

Nuisance Wildlife

In the wrong circumstances, almost any species of wildlife can become a nuisance. Learn how to prevent and solve wildlife damage problems.

Plant Diagnostic Clinic

Identifies and provides management solutions for insects, diseases and weeds.

Tree Pests

A collaborative effort of state and federal agencies to keep citizens informed of the latest invasive insect and disease threats to Missouri's trees.

Weed Science Extension

Allowing turf professionals, farmers and homeowners to search for and identify common weeds from alligatorweed to yucca.

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