Scales

There are many species of scales and they are difficult to control because of their protective covering. Learn to identify and manage scales in this factsheet.

Anthracnose

Anthracnose is the name of several common fungal diseases that affect the foliage of woody ornamentals in Wisconsin. This factsheet describes symptoms and management.

Black Knot, Apiosporina morbosa

Large swollen dark-colored growths on plum and cherry trees are caused by a fungal pathogen that causes the disease known as black knot. To learn more about this disease and how to manage it, read this article.

Lichens

Lichens are organisms that arise from mutually beneficial interactions between certain fungi and algae. Learn about these harmless, and very common organisms in this factsheet.

Verticillium Wilt of Trees and Shrubs

Verticillium wilt is a typically fatal disease that affects a wide range of deciduous woody ornamentals in Wisconsin. Symptoms and management are covered 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.

Scale Insects

Scale insects are often overlooked because they are immobile and look like small bumps that just might be plant parts. Learn more about this group of inconspicuous and atypical insects in this article…

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