Snow brings welcome moisture to many landscape plants, which will in turn help prevent desiccation injury. Even dormant plants continue to lose moisture from twigs (as water vapor) in the process known as transpiration. Evergreen plants, which keep their leaves through the winter, are at even greater risk of injury.
On the other hand, some evergreens can suffer from too much snow load. The weight of snow and ice can bend or even break branches, particularly on multi-stemmed shrubs such as arborvitae. Snow should be gently removed by brushing away with a broom. Do not try to remove ice since it is more likely that you will break the stems. Multi-stemmed shrubs that are known to be susceptible to breakage can be bound with twine to hold branches together.
Of course, there's still much more winter to come before we'll know how well our plants fare. In the meantime, rest assured that there really is a silver lining to this storm cloud, at least in the areas that received the snow.
So think spring and be thankful that it's snowing in February and not May.
Email any questions of comments to me. Thanks, Mark Saidnawey