My question is I have lilacs that are about 10 feet tall and I'm looking to cut about two feet off the tops. Can I do it now or even early spring? I live in NY and the temps are in the 30's and 40's when I'm looking to cut them.
Trimming of Lilac
Certified GKH Gardening Expert
Pruning them in early spring will not hurt the plant, but it will greatly reduce the amount of blooms you get this year. If this is not a concern, you can prune in early spring. Otherwise, wait until right after they bloom to prune them.