The Red Heart Althea Shrub (Hibiscus syriacus 'Red Heart') is a captivating and ornamental deciduous shrub that enchants with its striking beauty and unique floral display. This garden gem belongs to the mallow family and is more commonly known as Rose of Sharon.
 
Standing at a mature height of 6 to 10 feet (1.8 to 3 meters) and spreading 4 to 6 feet (1.2 to 1.8 meters) wide, the Red Heart Althea Shrub boasts an upright, vase-shaped growth habit. Its distinctive feature, as implied by its name, is the remarkable crimson-red center that adorns each large, saucer-shaped flower. These stunning blooms, measuring about 3 to 4 inches (7.6 to 10.2 cm) in diameter, emerge against a backdrop of lush green, serrated foliage, creating an eye-catching contrast that is a true delight for any garden enthusiast.
 
The Red Heart Althea Shrub's blossoms typically appear in the late summer to early fall, adding a burst of color and charm to the landscape just when many other plants are winding down. This late-season flowering makes it a valuable asset in extending the beauty of your garden well into the cooler months.
 
Beyond its aesthetic appeal, this shrub is known for its adaptability and low-maintenance nature. It thrives in a variety of soil types and is generally resistant to pests and diseases, making it an excellent choice for both novice and experienced gardeners. Its moderate growth rate ensures that it can be easily managed and shaped to suit your preferred landscape design.