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TREES & Plants

Help with diseases

The Morton Arboretum Plant Clinic provides insight into common tree and plant diseases that ravage homeowners and communities alike. Details include identification, cycles and management.

Evergreen diseases

Cedar-apple and related rust diseases

Diplodia tip blight of conifers (also known as Sphaeropsis tip blight)

Juniper tip blight diseases

Pine diseases

Spruce diseases

 

Leaf diseases

Anthracnose of shade trees

Apple scab

Cedar-apple and related rust diseases

Fire blight

Ground cover diseases

Powdery mildews

 

Stem diseases

Black Knot of Ornamental Cherry and plum

Canker diseases

Fire blight

Ground cover diseases

Wetwood

 

Vascular diseases

Dutch elm disease

Oak wilt

Verticillium wilt