ELLEN PEFFLEYWhy—andhow—topruneconifersIn recent columns wasadvice and guidelines for pruningoaksanddeciduous trees and shrubs. Because conifers also may need or could benefit from pruning, today’s column looks at some reasons for pruning these trees.Deciduous trees are those that lose leaves during part of the year, while conifers, with few exceptions like hemlocks ...