Definition:
The term, "evergreen" means having foliage that persists and retains its color throughout the year, rather than changing color according to the seasons. The term, "evergreen" is something of a misnomer, as the color in question needn't be green. For instance, Colorado blue spruce trees are evergreens, but the color they retain throughout the year is a silvery blue.
Trees and shrubs can be classified as either evergreen or deciduous. Note that not all conifer trees are evergreen, despite the popular association between "conifer trees" and "evergreen trees." The tamarack or larch tree, for instance, is a conifer, but it is not an evergreen.
