Leyland cypress (x cupressocyparis leylandii) has a lot going for it.
46+ Leyland Cypress Brown Branches. When your leyland cypress has browning foliage, act quickly to diagnose the problem and use control methods. In early spring, remove the brown branches and your tree should bounce back.
Are My Leyland Cypress Trees Healthy Ask An Expert from ask.extension.org
Perhaps the two trees that are turning brown are suffering from moisture stress. Diseases that result in browning of leyland cypress often occur on stressed, weakened trees. The leyland cypress grows best in full sunlight exposure and in usda hardiness zones 6 through 10, enjoying hotter summers and milder winters that don't experience prune your leyland cypress in the spring and fall.
They are often yellow to grayish tan to reddish brown in color and usually appear.
The wood turns nicely, has interesting grain patterns and polishes to a soft luster. Branches turn brown and die and this can lead to the death of the entire tree. Diseases that result in browning of leyland cypress often occur on stressed, weakened trees. Leyland cypress grows well in a wide range of soils, ranging from all sand feeding on the sap needles turn yellow and later brown.
