Leyland Cypress Diseases
Leyland Cypress Diseases. Leyland cypress (x Cupressocyparis leylandii) is an oval or pyramidal evergreen tree that grows well in United States Department of Agriculture hardiness zones 6 through 10a, according to the University of Georgia Cooperative Extension. This rapid-growing tree can grow up to 3 to 4 feet a year, eventually reaching heights of 50 feet or more. Although Leyland cypress are generally pest free, the tree is susceptible to canker diseases, blight and root rot.
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