|Winter dry spells can be hard on evergreen trees and shrubs, so water them if you aren't getting enough rain. A 2-3 inch layer of mulch will help to conserve
moisture, and spraying with an anti-transpirant will help prevent damage. Anti-transpirants add a waxy layer to the leaves, protecting them from cold,
drying winds. It's best to spray on a day when the temperature is above 40F.