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Tree Diseases
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Updated: October 21, 2024
Beech Leaf Disease in Maryland
A new disease is affecting all types of beech trees in the northeastern United States. Symptoms of Beech Leaf Disease include dark bands on leaves, yellowing and distorted leaves. Maryland residents should report symptoms to Extension.
Updated: October 17, 2024
IPM - Prevent, Identify, and Manage Plant Problems
How to ID, prevent, and manage plant problems in Maryland using IPM
Updated: October 22, 2024
Cherry Shot Hole Disease
Holes in the leaves of cherry trees are often caused by disease and not damage from insect feeding.
Updated: October 21, 2024
Anthracnose Diseases of Shade Trees
Distinct lesions patterns along leaf veins are signs of anthracnose disease on shade trees.
Updated: June 5, 2024
Rust Diseases of Trees
Alien looking orange balls with horns are the fruiting bodies of cedar-apple rust on juniper trees.
Updated: May 30, 2024
Apple Scab Disease
Apple scab is a common fungal disease of apple and crabapple trees that first appears as olive-green spots without distinct borders.
Updated: June 22, 2023
Fire Blight Disease of Trees
Infected leaves of fire blight infected trees and shrubs in the rose family hang on and droop in a classic 'shepherd's crook.'
Updated: June 8, 2023
Why Oak Trees are Declining or Dying
Oak trees are declining for a variety of reasons.
Updated: May 18, 2023
How Do You Decide When to Remove a Tree?
Factors to consider when removing a tree.
Updated: May 11, 2023
Needle Cast Diseases of Evergreen Trees
Yellow or brown spots on the needles of spruce trees can be caused by a needle cast disease.
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