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Plant Disease

Growing isn't always easy. When plant problems present themselves, you can count on WVU Extension specialists and agents for trusted, research-based advice. Learn about common plant diseases.

Browse the Plant Disease Identification Guide

Extension experts help identify, prevent and find solutions to recover from stress, injury and disease in all types of plants. Contact the WVU Extension Service when your plants get sick.

Plant Disease Identification Guide

tomatoes on vine showing rotten sections

Fruit & Vegetable Diseases

Downy Mildew
Early Blight of Tomatoes
Late Blight of Tomatoes
Powdery Mildew
Septoria Leaf Spot
Strawberry Black Root Rot
powdery mildew

Landscape Tree Diseases

Diplodia Tip Blight
Leaf Scorch
Rhizosphaera Needle Cast
Seiridium Canker
Winter Damage
cracked apple

Tree Fruit Diseases

Fire Blight on Pome Fruit
Fruit Cracking
Peach Leaf Curl
Cherry Leaf Spot
Black Rot Disease in Apples
Brown Rot in Stone Fruit
Introduction to Black Knot


Plant Diagnostic Clinic

Contact the Clinic

WVU Plant Diagnostic Clinic

G102 South Agricultural Sciences
Morgantown, WV 26506-6108
email Email Mahfuz Rahman
phone 304-293-8838 phone 304-288-9541

Monday - Friday | 8:15 a.m. - 4:45 p.m.
Closed on WVU Holidays

Collect & Submit Plant Samples

Take & Submit a Plant Sample


Plant Disease Alerts

Currently, no alerts are active. If you see or suspect a plant disease outbreak, please contact Mahfuz Rahman with the WVU Plant Diagnostic Clinic or your local county Extension agent, immediately.

Expert Plant Disease Help

Get integrated crop management assistance.

Mahfuz Rahman
Mahfuz Rahman
To protect the health and safety of our employees and community, many WVU and WVU Extension Service employees are working remotely. While we may not be physically in our brick and mortar offices, we are working hard to assist our fellow West Virginians in all 55 counties. For information about WVU’s efforts, check coronavirus.wvu.edu for more.