Should I Prune My Tree In The Winter?
Short answer; absolutely!
Winter can be an ideal time to prune your trees and shrubs.
As a plant prepares for its dormant seasons, it breaks down the nitrogen (energy) in its leaves (the chemicals it uses to do this are what cause the bright fall colours) and stores the energy in the root system. In the spring it draws on these energy stores to rebuild its canopy and begin collecting sun again.
Since the leaves are no longer out, and the hard earned energy is now safely stored underground; winter pruning results in less overall energy loss. This translates to a more robust and healthy tree come spring.