Emerald ash borer is an invasive pest that causes grave damage to ash trees. A certified arborist shares how to spot the ...

Mature ash trees were thought to be a symbol of the well-being of the land itself. Noted for their strong and flexible timber ...

beetles initially infest the upper portion of the tree within the canopy where evidence is very difficult to see. While the ash is vigorous, it responds by producing callus. This pushes the bark out ...

The emerald ash borer lays its eggs on the bark of ash trees. The larva hatch and tunnel under the bark, creating S-shaped grooves in the tree. The larva’s tunneling disrupts the nutrient flow ...

By Tim Douglass [email protected] Glenwood City Administrator Dave Iverson is nearing completion of a city-wide plan for dealing with emerald ash borer (EAB) in Glenwood. The plan, though not ...

The larval stage of this insect tunnels through the wood just beneath the bark of ash trees, cutting off the tree’s ability to transport water and nutrients. The cumulative damage typically ...

If the tree is already infested, it must still be healthy enough to transport systemic insecticide through the trunk and into the branches and canopy in order for the treatment to be effective – if 50 ...

The larvae tunnel under bark, cutting off nutrients from the tree and killing them often within five or six years. If ash trees aren’t treated against EAB, Osthus said they will eventually ...