This Diseased Johnston Tree Became a Serious Storm Risk

Dutch Elm Disease #arborist #environmentalscience

How Arborists Check for Dutch Elm Disease (Before Treating)

Edmonton is on the verge of an Elmdemic

Dutch Elm disease spreading in Edmonton

Caucasian elm trees are highly resistant to Dutch elm disease. #tree # nature

Leaning Elm Tree Removal in Urbandale

Taking Down a Diseased Elm Tree

What Is This Red Stuff?

Know your elm trees Not Chinese