Shrubs that are “evergreens” maintain their leaves and color all year round. Some evergreens are not actually green, and may be blue or yellow. They do not change color with the seasons. Evergreens do lose there leaves, but do so at a much slower rate and not necessarily in response to s season change. Evergreens are an important part of your landscape, particularly in New England, because during the winter they provide color to your landscape when the leaves have fallen off everything else that is not evergreen.