Blog Archives

Recognizing the “In-line Borer”

One of the more curious signs on a tree is one or more rows of regular, shallow holes on the trunk. Usually, this is the work of the yellow-bellied sapsucker, a member of the woodpecker family. The sap that wells

Posted in Forest Trees, Landscape Trees & Shrubs

Emerald Ash Borer Outlook for 2017

Since its discovery in 2009, the emerald ash borer (EAB) has spread dramatically (Figure 1) within the Commonwealth. This spread will continue through short-range dispersal flights of the insect and long distance transport of infested wood, primarily firewood. Naturally, those

Posted in Forest Trees, Landscape Trees & Shrubs

Will Introduced Pine Sawflies Return?

The caterpillar-like larvae of the introduced pine sawfly prefer to feed on needles of eastern white pine but also will feed on Scotch, red, Austrian, jack, and Swiss mountain pine. They may feed on short leaf and Virginia pines, but usually

Posted in Landscape Trees & Shrubs

Euonymous Scale

Euonymous scale, a serious pest of euonymous, pachysandra, and bittersweet, is a common arrival at the UK Insect Identification Lab. Given time, these armored scales can encrust stems and foliage of plants causing yellowed foliage, stunted growth, and branch dieback.

Posted in Landscape Trees & Shrubs

Leaf Scorch and Winter Drying of Woody Plants

Leaf scorch occurs whenever water needed for growth and health of plant foliage is lost from leaves faster than it can be replaced from soil. Any factor that interferes with uptake or movement of water through plants cause water deficiency

Posted in Landscape Trees & Shrubs

Tree Wounds – Invitations to Wood Decay Fungi

Wood decay leads to loss of tree vigor and vitality, resulting in decline, dieback, and structural failure. Wounds play an important part in this process since they are the primary point of entry for wood decay pathogens. While other factors

Posted in Landscape Trees & Shrubs

Stress and Decline in Woody Plants

Woody trees and shrubs may exhibit decline resulting from the stresses that can occur during their lives. Stress may be the result of improper plant or site selection, incorrect planting or maintenance practices, or poor soil conditions. Injury from equipment,

Posted in Landscape Trees & Shrubs