 Shrubs in common garden practice are generally considered broad-leaved plants, though some smaller conifers such as mountain pine and common juniper are also shrubby in structure.Species that grow into a shrubby habit may be either deciduous or evergreen.In botany and ecology, a shrub is more specifically used to describe the particular physical structural or plant life-form of woody plants which are less than high and usually have many stems arising at or near the base.