Hold off on pruning during warm spell?
I'm a professional tree and shrub pruner. We've had a nice, cold winter thus far and I've begun work. This week, however, we've had temps got the 50s for 2-3 days. My question is, should I hold off on significant pruning until weather gets cold again? My fear is whether the trees will initiate sap flow in this warm spell and then if we get a sudden deep freeze , will that cause sap/water expansion and potentially harm the trees? Thanks,. Matt