682-204-4746 www.arboristusa.com Hello Community, I’m Henry Friar, ISA Certified Arborist with Arborist USA. Today I’m performing a Tree Risk Assessment on a large American elm here in Joshua, Texas, and this is a high-risk tree under ISA standards. This elm has severe basal rot at the trunk flare, extensive internal decay, and major flatheaded wood borer galleries. The tree’s natural defense system, known as CODIT, has failed at Walls 1 through 3, and Wall 4 is forming too slowly to stop the sp