When planning your garden and landscapes, remember the winter months. Evergreen trees and shrubs provide a valuable source of green color when other plants have lost their foliage and just aren't providing much interest. Evergreens keep their foliage during the winter months while deciduous shrubs lose their foliage. Some popular evergreen shrubs for winter color are arborvitae, juniper, daphne and gardenia. These can be grown as accent plants or grouped together to form a hedge near walkways or property lines. When buying evergreen shrubs for sale online, some factors to consider are hardiness zone, mature height and spread, sunlight requirements, foliage, soil requirements and maintenance needs.