Q.leyland cypress
My 5 year old cypress (15 feet) is dying. Branches are drying up. In about 3 weeks, about 10 branches have dried up, with more each day. It’s in between 2 other trees cypress. Should I cut branches off? What should I do?
I'm sorry your Leyland cypress doesn't seem to be doing well!
If all 3 trees are planted very close together, they could be crowding each other out and the overlapping branches could be wounding the one that's losing the leaves.
Two additional possibilities could simply be that the middle tree isn't getting enough water or a pest such as bagworms is attacking it.
Fortunately, midsummer is the best time to prune the tree if that's the direction you decide to go. These articles may help you determine what the issue is and properly prune your tree.
https://www.gardeningknowhow.com/ornamental/trees/leyland-cypress/pruning-leyland-cypress.htm
https://www.gardeningknowhow.com/ornamental/trees/leyland-cypress/growing-leyland-cypress-trees.htm
