How to Winterize Shrubs and Protect Plants in Cold Weather

Water before deep freezes, mulch roots — not stems — and protect vulnerable evergreens from wind and salt.

Winter damage often starts in fall: dry roots going into freeze-thaw cycles, salt spray on hedges, and heavy snow breaking weak branch unions. Evergreens continue to lose moisture in winter wind even when the ground is frozen.

Water thoroughly before the ground locks up, mulch the root zone after soil cools, and avoid fertilizing late in a way that pushes tender growth. Burlap screens and anti-desiccant sprays help some exposed evergreens; wrapping everything in plastic usually does more harm than good.

Newly planted shrubs and borderline-hardy plants deserve the most attention. If last winter browned half your foundation planting, plan protection — or plant tougher choices — before the next cold season.