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Home > Diseases > Alphabetical List of Diseases

Alphabetical List of Diseases

Anthracnose on maple

Anthracnose (of trees)

apple scab

Apple Scab

rose leaves with symptoms of black spot

Black Spot of Rose


tomatoes with anthracnose

Common Tomato Diseases:

Late Blight

Early Blight


Bacterial Spot

Bacterial Canker

Tomato Leaf Spot

White Mold (Sclerotinia stem rot)

Blossom End Rot



Fruit Cracking

lily plant with day lily rust

Daylily Rust

downy mildew on cucumber

Downy Mildew of Cucurbits


fairy ring

Fairy Rings



late blight symptoms on tomato

Late Blight (Tomatoes and Potatoes)


salt damage on pine

Other Tree Problems

powdery mildew on phlox

Powdery Mildew of Flowers and Trees

powdery mildew on pumpkin

Powdery Mildew of Vegetables


turf rust

Rusts (turf)

Snow Molds (turf)

White Pine Blister Rust

White Pine Blister Rust


Didn't find what you were looking for? More Help with Disease Identification

Want to Know More? Links to More Information About Healthy Gardens


[Photos, left to right: (anthracnose) Dr. Wayne Sinclair, Cornell University; (apple scab) Clemson University - USDA Cooperative Extension Slide Series,; (black spot of rose) Yuan-Min Shen, Taichung District Agricultural Research and Extension Station, ; (tomato) Texas AgriLife Extension Service, Texas A&M System; (daylily rust) Division of Plant Industry Archive, Florida Department of Agriculture and Consumer Services, ; (downy mildew of cucurbits) Gerald Holmes, Valent USA Corporation,; (fairy rings) unknown; (galls) William M. Ciesla, Forest Health Management International,; James Solomon, USDA Forest Service,; Steven Katovich, USDA Forest Service,; Steven Katovich, USDA Forest Service,; (late blight) Department of Horticulture Website at Cornell University; (other problems of trees) University of Minnesota Extension; (powdery mildew) The Dow Gardens Archive, Dow Gardens, ; (powdery mildew of vegetables) Howard F. Schwartz, Colorado State University, ; (rusts) University of Minnesota Extension ; (snow molds) unknown; (white pine blister rust) Joseph O'Brien, USDA Forest Service,]


It is the policy of the State of Maine to minimize reliance on pesticides. The Maine Department of Agriculture and the Maine IPM Council encourage everyone to practice integrated pest management and to use pesticides only as a last resort. The mention of pesticides in the fact sheets linked to these pages does not imply an endorsement of any product. Be sure that any product used is currently registered and follow all label directions.