An understanding of the interactions between diseases and plants in landscapes and nurseries is an essential component of an Integrated Plant Management or Plant Health Care program. The following fact sheets provide detailed information about typical symptoms, susceptible plants, how infection occurs, and management strategies. The fact sheets are intended to help the green industry professionals identify the cause of a plant disease or disorder, and decide whether alternative plant choices, sanitation, modification of the growing environment, chemical controls or a combination would best address their particular situation.

Diseases index:

Apple Scab
Armillaria Root Disease
Ash Rust
Ash Yellows
Black Knot of Prunus
Black Spot of Rose
Botryosphaeria Canker
Cedar Apple Rust
Cedar Hawthorn Rust
Cedar Quince Rust
Crown Gall
Cytospora Canker
Dogwood Anthracnose
Dutch Elm Disease
Elm Yellows
Fire Blight
Frogeye (Sphaeropsis) Leaf Spot
Giant Tar Spot
Guignardia Leaf Blotch
Hawthorn Leaf Spot
Holly Leaf Spot
Kabatina Blight
Lophodermium Needle Cast
Oak Leaf Blister
Ovulinia Petal Blight
Peach Leaf Curl
Perennial Nectria Canker
Phomopsis Blight
Phytophthora Bleeding Canker
Phytophthora Crown and Root Rot
Phytophthora Dieback
Ploioderma Needle Cast
Plum Pox Virus - Penn State Cooperative Extension
Powdery Mildew
NEW! Ramorum Dieback
Rhododendron Leaf Spot
Seedling Root and Crown Rots of Woody Plants
Sooty Mold
Sphaeropsis (Diplodia) Blight
Spore Shooting Fungi
Sycamore Anthracnose
Verticillium Wilt
Vollutella Blight
Wetwood and Slime Flux

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