Yard work: fruit trees: pruning and winter damage, part0
Self-tutoring about yard work: the tutor mentions a relationship between pruning and winter damage.
Winter damage – aka winter injury – seems to be a general term meaning injury that a tree sustains during, and due to, winter conditions. While it’s not necessarily caused by pruning, pruning at the wrong time can cause it.
Apparently, pruning in the winter or early spring, on a day when the temperature happens to be above freezing but will return below freezing, will cause winter damage. Moreover, the more quickly, after pruning, that the temperature drops from above freezing to below, the worse the damage will be.
Source:Oracle Tutoring by Jack and Diane, Campbell River, BC.