Which tree species are particularly prone to certain pests?

Ash trees are particularly vulnerable to the emerald ash borer, which is a highly destructive pest that targets this specific species. The emerald ash borer, a small green beetle, lays its eggs on the bark of ash trees. Once the larvae hatch, they burrow into the tree, disrupting the flow of nutrients and water, which can ultimately lead to the tree's death. This pest has caused significant damage to ash populations across North America, making it crucial for tree trimmers and arborists to be aware of the signs of infestation and to manage affected trees appropriately.

While the other tree species mentioned in the options do face pest pressures, the association between ash trees and the emerald ash borer is particularly pronounced and damaging. Effective management and awareness of this pest's life cycle and behavior are vital for preserving ash tree populations.