Horticulture diseases and pests

Have a pest problem?

We can help with plant disease diagnosis, identification of unknown plants and insects and treatment

Learn more

Eventstab

Events

View all events

Private Pesticide Applicator Training (PAT) and Ag Update - Buchanan County

Event date: April 4, 2023

Event time: | 9:00 am - 12:00 pm

St. Joseph, MO

Attending Private Pesticide Applicator training allows those individuals who farm to purchase and apply restricted use pesticides and will receive a license from Missouri Department of Agriculture. The training is for those who need a license and ...

Container and Raised Bed Gardening

Event date: April 6, 2023

Event time: | 6:00 pm - 8:00 pm

Osceola, MO

Provides in depth horticulture training for Missourians who wish to spread their knowledge of gardening. Participants will learn how to start and maintain container and raised bed gardens to help combat poor soil conditions, limited space for ...

Container and Raised Bed Gardening

Event date: April 24, 2023

Event time: | 6:00 pm - 8:00 pm

Bolivar, MO

Private Pesticide Applicator Training - Shannon/Carter County

Event date: May 4, 2023

Event time: | 4:00 pm - 6:00 pm

Winona, MO

New Date!Please arrive between 10-15 minutes early to register in-person if not registered online.Cost: FreeContact: Haley Schwantz, [email protected], 417-778-7490

View all events

News & articlestab

News & articles

View all news & articles

Ounce of prevention in fall is best medicine for garden success in spring

Published: Monday, Oct. 3, 2022

COLUMBIA, Mo. – Ben Franklin’s adage of “an ounce of prevention is worth a pound of cure” could be gardeners’ theme song for November.Gardeners should close the curtain on this season and begin looking forward to the next, said University ...

How to help your trees recover from drought

Published: Tuesday, Aug. 2, 2022

COLUMBIA, Mo. – Dry soil conditions can significantly reduce the life span of valuable landscape trees.“Because they are difficult and expensive to replace, your trees need attention during and after periods of drought,” says University of ...

Rose rosette continues to plague garden roses

Published: Thursday, June 30, 2022

COLUMBIA, Mo. – Rose rosette is a devastating disease of roses. There is no cure. Infected rose bushes should be removed from the landscape and destroyed, said David Trinklein, horticulture specialist for University of Missouri Extension.The ...

On patrol for critter control

Published: Thursday, May 12, 2022

COLUMBIA, Mo. – Pest control in the garden might conjure images of a season-long battle with bugs, weeds and diseases. But sometimes four-legged “friends” such as deer, rabbits and squirrels can inflict far more damage, says University of ...

View all news & articles

Publicationstab

Publications

View all publications

Asian Chestnut Gall Wasp

Publication date: Jan. 9, 2023

Adult Asian chestnut gall wasp.Photo: Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org Distribution and hostsThe gall wasp, Dryocosumus kuriphilus Yasumatsu, was introduced into North America in 1974 on imported chestnut cuttings. A ...

Identification and Management of Turfgrass Diseases

Publication date: Oct. 26, 2022

Establishment and maintenance of turfgrasses is a multibillion dollar industry in the United States for good reason. Turfgrasses don't just add beauty to one's surroundings. Natural grasses provide safe and attractive playing surfaces for sports and ...

Common Weed Seedlings of the North Central States

Publication date: Oct. 26, 2022

Accurate weed identification is the first step in a successful weed management program. Weeds respond differently to different management strategies. Whether you choose chemical, cultural or mechanical control measures, you need to know what weed ...

Turfgrass Disease Control

Publication date: Oct. 26, 2022

Reviewed by Peng TianAssistant Professor, Plant SciencesReviewed by Manoj ChhetriDepartment of HorticultureBrad S. FresenburgDivision of Plant SciencesTurfgrass disease is one of the serious and costly reasons for injury and death to grasses used in ...

Protecting Water Quality During Lawn Establishment and Renovation

Publication date: Oct. 26, 2022

Establishment of turfgrass brings beauty to any landscape. A well-established lawn creates an inviting view for passersby and supplies the perfect backdrop for other landscape elements, such as trees and shrubs. Well-established lawns are an asset to ...

Caterpillars in Your Yard and Garden

Publication date: April 5, 2022

Some of the most easily observed insects in our backyards and gardens are caterpillars. Because they cannot fly or run away, we can approach and observe closely the behavior of these immature insects. Many children (and adults too) are intrigued by ...

View all publications

Resourcestab

Resources

View all resources

Oak Decline

Learn about oak decline in this leaflet from the U.S. Department of Agriculture's Forest Service.

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.

Herbicide Injury ID app (Google Play)

View all resources