Tree Diseases

Prevent, diagnose and manage ornamental cherry tree problems

Botrytis is a fungal disease on flowers of shrubs, bulbs, and herbaceous perennials that can spread to the stem and cause girdling and dieback.

Dutch elm disease shows as wilted branches of leaves that turn yellow and then brown.

Treat fire blight with an "ugly stub" pruning cut.

An isolated dead area on a tree's trunk or branch could be caused by a fungal canker disease.

Wilting can be a sign of physical injury, incorrect planting, drought, salt damage, or fungal wilt diseases.

Mushrooms at the base of trees are a sign of a root rot disease.

Wood rot fungi cause decay of the heartwood of a woody plant characterized by the appearance of mushrooms.

Warty black growths on the twigs of ornamental and fruiting cherry, plum, and other trees in the genus Prunus is called black knot.

Unusual or different patterns on tree leaves can be a sign of a viral infection.