Some boughs of my Leland Cypress trees are turning yellow. Is this likely a...
Some boughs of my Leland Cypress trees are turning yellow. Is this likely a disease, a pest or lack of fertilizer? They're well-established trees and the ywllow is on the lower branches, back to the trunks. Thank you.
Washington County Maryland
Leyland cypress trees have suffered extensively from winter cold damage this year. Even in southern and eastern Maryland, varying degrees of cold damage have been reported on Leylands as well as several other species of ornamental trees and shrubs. It must be pointed out that the northern range of Leylands is zone 7, and although Maryland has been re-designated in the past several years as zone 7, western Maryland and the northern border counties are right on the edge of 7 and 6B.
If you ultimately have to remove your Leylands, consider replacing with another species.