Pests and Diseases

Blog Archives

Information of tree and shrub pests and diseases.

Phytophthora Root Rot Disease

phytophthora root rot on yews

Phytophthora root rot is a disease of many trees and shrubs. The disease derives its name from the Greek language and literally means “plant destroyer.” As such, this is a fitting name for the pathogen, which can kill its host

Posted in Pests and Diseases

Monitor Trees for Signs of Insects & Disease

mushrooms growing near the base of a tree

The telltale signs of various tree diseases and insect infestations are often most evident in summer. Populations of many types of scales, mites, and aphids are particularly noticeable at this time. Some problems can be spotted and treated immediately. However,

Posted in Pests and Diseases, Tree Advice

Tree Damage from Hemlock Woolly Adelgid

The hemlock woolly adelgid is a sap-sucking insect that feeds specifically on hemlock trees. As the insects feed, they damage the tree by removing sap and disrupting the flow of water and nutrients. Though all species of hemlock are vulnerable,

Posted in Pests and Diseases

Invasive Shot Hole Borer Affecting California’s Trees

The polyphagous shot hole borer is a recently introduced, non-native beetle that is having a devastating impact on landscapes, forests and agriculture in southern California. This insect pest bores into trees, creating galleries where it feeds and lays eggs. Wood boring

Posted in Pests and Diseases

Spring is Coming … Along with Foliar Diseases

After the cold, dark weather of winter, we are all looking forward to spring! Flowers will be blooming.  The birds will be singing. And while spring brings new life to trees, it also brings foliar diseases that attack their growing

Posted in Pests and Diseases, Tree Advice
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Being a leader in the tree care industry means continually focusing on learning and innovation. Bartlett’s Tree Topics blog follows in that tradition by offering a place to receive advice on trees, tree pests, tree preservation, and more.

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