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. Mulching around the base of plants will help conserve soil moisture and prevent complete freezing of soil in the root zone. Susceptible plants can be wrapped in burlap to protect them from drying winds. Anti-desiccants can be sprayed on the foliage.