Informational table showing disease name, symptoms, pathogen/cause, and management of Mountain Ash diseases. Anthracnose Disease of Common Landscape TreesAnthracnose diseases can impact many types of landscape trees. Ash trees across the state are dying at an alarming rate, with little sign of the infestation slowing down. Anthracnose is a disease from a family of fungi that cause sunken dark lesions or cankers on leaves, stems, flowers, and fruits of trees and shrubs. Penn State University, for example, has lost 95 percent of the ash trees that forest biologist Dr. Kim Steiner planted in a 2,100-tree experimental green-ash … Damage The emerald ash borer (Agrilus planipennis Fairmaire) is a shiny emerald green beetle that kills living ash trees. Anthracnose actually means “ulcer-like sore,” and that is why it describes a family of fungal infections because it is based on the symptom rather than the specific fungus. Judging from your description, most likely your tree has a disease called ash decline. Emerald Ash Borer is a dangerous insect that has killed millions of trees across the country since the fatal pest first appeared in 2002. Ash tree (Fraxinus excelsior) severely affected by ash dieback disease (Hymenoscyphus fraxineus) on the border between Herefordshire and Powys, UK Evidence of ash dieback on young saplings at Elhampark Wood, Stelling Minnis, Kent. As evident by the name, Ash Dieback is typically a disease that is common with Ash trees. Fusiform Rust in ArkansasThis invasive pest has nearly eliminated ash trees in some parts of the U.S. Anthracnose. The beetle arrived in North America from Asia and was first noticed in 2002 in Detroit, This disease primarily causes the tree to shed its leaves, with visible lesions in the stem that look a burn, and crown dieback. ... Dead leaves and aborted flower parts remain on the tree. Epicormic Sprouting: When trees are stressed, they may try to grow new branches and leaves wherever they still can (suckering). Ash (genus Fraxinus) is found throughout many of the forests in eastern North America and it is a commonly planted street and landscape tree. It is caused by a fungal infection that goes by the name of Chalara Fraxinea , or C. Fraxinea for short. (See the page on diseases of ash trees for some additional information) Shoots (suckers) at base of trunk. Cedar-Apple RustThis disease impacts ornamental apples as well as fruit trees. Created with Sketch. The origins of the disease are still unknown, but scientists have suggested the disease may have been introduced to Europe from eastern Asia. EAB kills trees in 2 to 4 years after initial infection. Informational table showing disease name, symptoms, pathogen/cause, and management of Mountain Ash diseases. It is rapidly advancing toward Arkansas. 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