Chinese snowball and hydrangea are two popular flowering plants that are often confused due to their similar appearance. However, there are some key differences between the two that can help you identify them correctly.
1. Mature Height:
One of the easiest ways to differentiate between Chinese snowball and hydrangea is by measuring their mature height. Chinese snowball viburnum (Viburnum macrocephalum) typically grows 6 to 10 feet tall and wide. On the other hand, Annabelle hydrangea (Hydrangea arborescens ‘Annabelle’) grows to a smaller size, reaching only 3 to 5 feet tall and wide. So, if your plant exceeds 6 feet in height, it is likely a Chinese snowball bush.
2. Flower Appearance:
Both Chinese snowball and hydrangea produce large, showy flower clusters, but their appearances differ. Chinese snowball viburnum blooms in early to mid-spring with clusters of round, ball-shaped flowers that start off as lime green and gradually turn white. These flower clusters can measure up to 8 inches in diameter, creating a stunning display in the garden. In contrast, hydrangea flowers are more flat or dome-shaped, and they come in various colors such as white, pink, blue, or purple, depending on the variety.
3. Flowering Time:
Chinese snowball viburnum typically blooms in spring, usually in April or May, while hydrangeas have a longer blooming period. Hydrangeas can start flowering in late spring or early summer and continue blooming into fall, depending on the variety and growing conditions. This extended blooming period makes hydrangeas a great choice for adding color to your garden throughout the summer season.
4. Foliage:
While both Chinese snowball and hydrangeas have attractive foliage, there are some differences in leaf shape and texture. Chinese snowball viburnum has dark green, glossy leaves that are ovate or elliptical in shape. The leaves are slightly serrated along the edges and have a leathery texture. In comparison, hydrangea leaves are typically larger, broader, and have a more textured surface. The leaf color can vary depending on the variety, ranging from dark green to lighter shades of green.
5. Hardiness and Growing Conditions:
Chinese snowball viburnum is hardy in USDA hardiness zones 6 to 9, while Annabelle hydrangea is hardy in zones 3 to 9. This means that Chinese snowball viburnum can tolerate slightly colder temperatures compared to Annabelle hydrangea. Both plants prefer well-drained soil and thrive in full sun to partial shade. However, hydrangeas tend to require more moisture and may wilt if not watered regularly, while Chinese snowball viburnum is more drought-tolerant once established.
Chinese snowball and hydrangea can be differentiated based on their mature height, flower appearance, flowering time, foliage characteristics, and preferred growing conditions. By considering these factors, you can accurately identify whether you have a Chinese snowball bush or a hydrangea in your garden.
