Tree Diseases

Distinct lesions patterns along leaf veins are signs of anthracnose disease on shade trees.

Factors to consider when removing a tree.

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.

Yellow or brown spots on the needles of spruce trees can be caused by a needle cast disease.

Oak trees are declining for a variety of reasons.

Spot anthracnose or Elsinoë leaf spot on flowering dogwood trees can infect flowers, leaves, and fruit but resistant cultivars are available.

Prevent, diagnose and manage ornamental cherry tree problems

Apple scab is a common fungal disease of apple and crabapple trees that first appears as olive-green spots without distinct borders.

Botrytis is a fungal disease on flowers of shrubs, bulbs, and herbaceous perennials that can spread to the stem and cause girdling and dieback.