Evergreen shrubs are a perfect type of plant life to introduce to the garden landscape to add color and fragrance. Evergreen shrubs provide year-round colour and interest to your garden. Evergreen shrubs help balance a landscape, providing an anchor for deciduous perennials or a backdrop for annuals. Whatever your need, there is a fast-growing evergreen shrub perfect for your garden. Azalea evergreen shrub, this fast-growing shrub can grow to 6 feet tall and wide in optimal conditions. Hardy from zone 5 to 9, the foliage of the azalea is dark green and evergreen. Azalea prefers slightly acidic, moist, but not wet, soil in partial shade. Azalea flowers bloom in the spring and summer depending on the cultivar. The flowers are large and bloom in shades of red, white, yellow, orange and everything in between. Azaleas have a shallow root system and benefit from a thick layer of mulch to conserve moisture levels in the soil and soil temperature.
Another example of fast growing evergreen shrubs is a dark star California lilac. Growing to 6 feet tall and 10 feet wide, this fast-growing shrub is evergreen in USDA hardiness zones 9 to 10. Clusters of dark blue flowers cover the dark green leaves in the late spring, filling your garden with their honey-scented fragrance. This shrub prefers well-drained, moist soil and regular watering. Feed with a multipurpose fertiliser in the spring before the new growth begins.