What Are the Fastest Growing Flowering Shrubs?

Fill the landscape with swiftly growing flowering shrubs. With the ability to shoot up in a short period of time, rapid growers are ideal shrubs to grow when privacy is essential or you want to quickly transform the landscape. Grown in dozens of varieties, each with its own distinct shape, many rapid growers thrive in full sun and well-drained soils. Tucked along a garden wall or planted in a trio along a backyard patio, flowering shrubs create a showy landscape display.

Butterfly Bush

The butterfly bush (Buddleia davidii) is a flowering shrub with a rapid growth rate. Growing 5 to 10 feet tall and 6 to 8 feet wide, the butterfly bush has a rounded form with cascading, arching branches that hold the bright panicle flowers. Growing 4 to 10 inches long, the blooms grow in a wide range of colors including, pink, purple, white, yellow and lilac. Emerging in summer, the fragrant flowers last into fall for a long-lasting shrub variety. Drought-tolerant, butterfly bushes have blue to green leaves that grow 4 to 10 inches long. Easy to transplant, the butterfly bush flowers the best after the shrub has been pruned down, preferably in later winter. A butterfly attractant, hence the name butterfly bush, the butterfly bush requires full sun and moist, well-drained soil. Versatile, the butterfly bush tolerates a wide range of soil type, including clay and sandy soils. The USDA Hardiness zones for planting are 5 to 9.

Dwarf Crape Myrtle

Dwarf crape myrtle (Lagerstroemia indica) is a deciduous shrub with a rapid growt myrtle shrubs have an upright, umbrella-shaped form that is dense. Medium in texture, dwarf crape myrtle shrubs have bright blooms that grow in a wide range of colors including, white, red, pink and purple. The dark green leaves grow in a trio of whorls that turn fiery colors of red, orange and yellow in the fall. Drought-tolerant, dwarf crape myrtle has mottled bark that creates an unusual garden display. Dwarf crape myrtle requires full sun and moist, well-drained soils to thrive. The zones for planting are 7 to 9.

Bridalwreath Spirea

Bridalwreath spirea (Spiraea plenaflora Plena) is a deciduous shrub with ethereal white flowers and a fast growth rate. Growing 5 to 7 feet tall and 3 to 5 feet wide, bridalwreath spirea has an upright, mounding form that drapes downward to produce a striking spring-blooming shrub. The small, double flowers on bridalwreath spirea are white and cover each branch, head to toe. The toothed green leaves grow up to 2 inches wide and turn red to orange in fall. Bridalwreath spirea shrubs require full sun to light shade and well-drained soil with a medium moisture content. The zones for planting are 5 to 8.

Keywords: fast growing shrubs, flowering shrubs, butterfly bush, dwarf crape myrtle, bridalwreath spirea

About this Author

Callie Barber is a writer, designer and photographer in North Carolina. Barber's love for design and writing inspired her to create Design Your Revolution, a blog that shares creative and affordable ways to decorate your indoor and outdoor living environment. Her articles have appeared in Travels.com and GardenGuides.com and her photography has been featured in "Automotive News" magazine and Forbes.com.