Tree Top Times

The Lifecycle of the Emerald Ash Borer – a Video

Check out this great Emerald Ash Borer lifecycle video produced by the Minnesota Department of Agriculture. This quickly shows how this pest can be spread through transported firewood, and then how it infests and destroys Ash trees. This video was produced by MDA through a unique collaboration with faculty and students of Art Institutes International […]

Emerald Ash Borer University

As Arborists in Denver, Mountain High Tree staff members attend and participate in many ongoing education programs so that we’re on the cusp of what is going on in the tree service industry. One of the biggest tree service topics today is the arrival of the Emerald Ash Borer in Boulder, Colorado in 2013. This devastating […]

How to detect Emerald Ash Borer in Ash Branches

Watch the video above from to see how the branches can be peeled to detect galleries and larvae.  The Emerald Ash Borer has been found in Colorado. With it’s arrival, many of our urban Ash Trees are threatened by this pest. Early detection of it’s presence is crucial to planning and carrying out control in our […]

Wood Boring Insects of Ash Trees

Ash is one of the most widely planted trees in Colorado, with most plantings either involving green ash (Fraxinus pennsylvanica) or white ash (F. americana). Several insects are associated with these plants, including leafcurling aphids, various caterpillars and sawflies that chew the leaves, and wood borers and bark beetles that develop within the trunk and […]

Emerald Ash Borer in Colorado

Denver Colorado, 09/28/13: PEST ALERT: EMERALD ASH BORER FOUND IN BOULDER COUNTY The Colorado Department of Agriculture confirmed today that the Emerald Ash Borer was found in Boulder County. This destructive pest has caused billions in damaged across the Ohio, Michigan, and Illinois. We have been following this insect and knew this would happen, but […]