Ninebark is a fascinating plant with a unique characteristic – its bark flakes off in nine layers, hence the name. This exfoliating bark is particularly prominent on older, woody specimens, adding to the plant’s aesthetic appeal. In total, there are eight known species of ninebark, with several of them native to North America.
One of the most well-known species is Physocarpus opulifolius, commonly known as Eastern ninebark or common ninebark. This species is native to eastern North America and is widely cultivated for its attractive foliage and exfoliating bark. The leaves of Physocarpus opulifolius are deeply lobed and have a rich, dark green color. The flowers, which appear in spring, are small and white, forming clusters at the ends of branches. Eastern ninebark is a versatile shrub that can thrive in a variety of soil and light conditions, making it a popular choice for gardeners and landscapers.
Another species of ninebark is Physocarpus capitatus, also known as Pacific ninebark. As the name suggests, this species is native to the Pacific Northwest region of North America. Pacific ninebark is known for its attractive white flowers that bloom in late spring or early summer. The flowers are followed by small, reddish-brown fruits that add further visual interest to the shrub. Like other ninebark species, Pacific ninebark has exfoliating bark and deep green leaves.
Physocarpus malvaceus, commonly called mallow ninebark, is another species worth mentioning. This ninebark species is native to the southeastern United States and is characterized by its large, maple-like leaves and clusters of pink flowers. Mallow ninebark adds a touch of elegance to any garden or landscape with its showy blooms and vibrant foliage.
Other species of ninebark include Physocarpus intermedius, Physocarpus monogynus, Physocarpus alternans, Physocarpus amurensis, and Physocarpus opulifolius ‘Nanus’. Each species has its own unique characteristics, such as different flower colors, foliage shapes, and growth habits. By incorporating a variety of ninebark species into a garden or landscape, one can create a visually appealing and diverse plant palette.
In my personal experience as a gardener and landscaper, I have worked with several varieties of ninebark and have found them to be reliable, low-maintenance shrubs. Their exfoliating bark adds an interesting texture to the landscape, especially during the winter months when other plants may be dormant. The vibrant foliage and attractive flowers make ninebark a popular choice for adding color and visual interest to gardens and landscapes.
To summarize, there are eight known species of ninebark, including Physocarpus opulifolius, Physocarpus capitatus, and Physocarpus malvaceus. Each species has its own unique characteristics, but they all share the fascinating trait of exfoliating bark. Incorporating a variety of ninebark species in a garden or landscape can create a diverse and visually appealing plant collection.
