USDA Zones: 4- 8 The Pyracantha shrub lives up to its common name since it does have thorny branches. This woody shrub's annoyance for humans that makes it such an excellent shelter for birds. It's a favorite nesting shrub for many birds. The berries it produces is eaten by several
species, including bluebirds.
The firethorn is often used as a trained specimen because of its slow growth. It can be grown against the wall of a structure, on a trellis or trained into formal shapes. These shrubs prefer full sun but will tolerate shade. Look for disease- resistant varieties. Flowers and fruit: The firethorn has creamy white flowers followed by thick clusters of berries throughout the fall season lasting into winter. The berries are loved by many birds, including bluebirds. Best varieties: The hardiest varieties include 'Rutgers" and 'Yukon Belle', a dwarf variety called 'Apache' only grows to 5 feet tall.