Vegetable Disease Quick Reference
This article provides a list of 10 relatively easy-to-identify plant diseases commonly found in Wisconsin vegetable gardens.
Diseases & Disorders
Powdery Scab
Powdery scab is a potentially serious disease of potatoes that occurs worldwide in regions where potatoes are grown, including Wisconsin. Powdery scab primarily causes cosmetic, unsightly skin blemishes of potato tubers.
Tizón Tardío (Late Blight)
El tizón tardío es una enfermedad destructiva de los tomates y de las papas que puede matar a las plantas maduras y causar que los frutos del tomate y los tubérculos de la papa no sean comestibles.
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.
Degree Day Calculation
Degree Days incorporate temperature and time to quantify the rate of plant and insect development. This useful tool helps predict events such as flowering, harvest, and pest outbreaks.
Phenology
Phenology is a branch of science that studies the life cycles of plants and animals with seasonal changes and weather. Learn more in this factsheet.
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.
