What does the EAB do to ash trees?
As they feed under the bark, EAB larvae destroy the tree’s water and nutrient conducting tissue. This reduces water and nutrient flow to the canopy and causes thinning above infested portions of the trunk and major branches. Dieback in heavily infested trees usually starts at the top with one-third to one-half of the branches dying in one year; most of the canopy will die within 2 years of the first appearance of symptoms.
