Use mulch around the base of young trees and shrubs to help conserve soil moisture. Winter Drying Broadleaf evergreens and conifers are subject to a winter condition similar to leaf scorch, but referred to as winter drying. Soil in the root zone is normally frozen during the winter, making water unavailable to plants. Water lost through leaves cannot be replaced from the soil, much like a drought situation. Severe water loss can occur during sunny, windy winter days.
Leaves dry out and turn brown along margins and at tips.
Drooping foliage may also be observed. Symptoms may not actually become apparent until late winter or early spring. Winter drying is more likely to occur on sensitive species planted in an exposed location. Do not plant sensitive species in an unprotected location. Continue to water plants as needed into late fall.