Arborvitae (Thuja occidentalis) are commonly thought of as narrow, tall evergreens poking up through the landscape or used as a privacy screen. However, many varieties are much more compact, such as ...
If you're looking for a larger shrub arborvitae, up to four to five feet ... Boxwood features small green leaves that stay through the winter. Varieties include Buxus microphylla japonica 'Winter Gem.