Many conifers aren’t looking too great right now. Much of the problem is related to dry fall and winter weather over the last couple of years. Fall and winter months are typically dry, but these past couple of years have been especially dry. How does that affect these plants?
Although trees and shrubs “go dormant” in the fall, the root systems of these plants still function as long as soil temperatures hover around 40 degrees. Roots need water to function properly and their source for that is either Mother Nature or irrigation that we provide. No water during this period stresses or kills roots through dehydration.
Evergreen leaves can continue to transpire, that is, lose moisture to the surrounding environment, on warm sunny days, even in the winter. This is a normal leaf function, designed to keep the leaves from overheating, kind of like our perspiration.