26+ Leyland Cypress Trees Turning Brown. Perhaps the two trees that are turning brown are suffering from moisture stress. Fast growing, with evergreen, feathery foliage and a pleasing, slender profile, it reflective sunlight on snow can scorch leaves, also turning them brown.
Leyland cypress trees (cupressocyparis x leylandii) are valued for their majestic height, evergreen needles and varied uses. Positive drainage is a must! I transplanted a ~7 foot tall leyland cypress two months ago (in may, i'm located in maryland) and the needles began to brown after about 1 month.
My leland cypress trees have developed some brown edges but also have some small branches dying.
The simplest course of action to remedy flagging leyland cypress branches is to prune back the dead and dying branches using a pole pruner that has been disinfected with six parts water 1 part bleach. Leyland cypress trees can grow to 40m. It is called leaf or needle. Leyland cypress trees and similar like thuja green giant trees can provide great privacy but have huge issues when it comes to offering privacy long term.