Iris Severe Mosaic
Iris severe mosaic (also called yellow latent disease or gray disease) is a potentially severe viral disease that can adversely affect both bulb and rhizome-forming irises, as well as crocuses.
Diseases & Disorders
Strategies for Identifying and Managing Plant Diseases
By: Amanda Gevens, Professor and Integrated Extension Specialist Plants can be affected by fungus, bacteria, viruses and other factors. In this video, you will learn how to look for symptoms of plant disease, cultural methods to reduce disease pressure, and other management practices. Plant disease is an abnormal response in plant health to a pathogen, […]
Gray Mold (Botrytis Blight)
Gray mold (or Botrytis blight) is a common and often serious fungal disease that can affect plants of all kinds. Learn more in this factsheet.
Herbicide Damage
Herbicide damage is any adverse, undesired effect on a plant that is caused by exposure of that plant to a pesticide designed for weed control. Learn symptoms and more in this factsheet.
Chlorosis
Chlorosis is a common nutritional disorder of many woody ornamentals in Wisconsin, particularly in the southern and eastern parts of the state. This factsheet describes symptoms, causes and cures.
Winter Salt Injury and Salt-tolerant Landscape Plants
Learn to recognize and prevent plant damage caused by deicing salts. Learn about alternatives to rock salt and which plants are salt-tolerant.
Edema
Edema is a physiological disorder that affects houseplants, greenhouse plants, and other plants sheltered under plastic. Learn about these fluid-filled “blisters” on leaves in this factsheet.
▶︎ Watch: Powdery Mildew Remedies
Powdery Mildew is a disease that affects a lot of different plants. On most plants, it’s harmless. Find out if various home remedies you’ve heard about are effective in this video!
Root Rots in the Garden
Root rot is a general term that describes any disease where the causal organism attacks and leads to the deterioration of a plant’s root system. Learn about root roots and their management in this factsheet.
Volutella Blight
Volutella blight is a common and potentially lethal disease of Japanese pachysandra. Learn about symptoms and management of Volutella blight in this factsheet.
Ten Common Plant Diseases/Disorders You Can Diagnose by Eye
This article provides a list of 10 relatively easy-to-identify plant diseases commonly found in Wisconsin yards and gardens.
Tobacco Mosaic
Tobacco mosaic causing a blotchy light and dark coloring (mosaic) of tobacco leaves. Tobacco mosaic causing a blotchy light and dark coloring (mosaic) of tobacco leaves.
