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.

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.

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.

Verticillium Wilt of Vegetables

This factsheet covers Verticillium wilt, a typically fatal disease that affects a wide range of vegetable crops and other plants. Symptoms include sudden yellowing of foliage.

Bacterial Wilt of Cucurbits

Bacterial wilt is a common and destructive disease that affects cucurbits, including crops such as melon, cucumber and, to a lesser extent, squash and pumpkin. Learn more in this factsheet.

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