Bauhinia x blakeana also known as Hong Kong Orchid-Tree Growing 20 to 40 feet in height, Hong Kong Orchid-Tree creates a rounded, spreading canopy composed of large, six to eight-inch-diameter, gray/green leaves. Since young trees can be irregularly shaped, pruning during the first several years after propagation is often needed to develop a more uniform crown. It is the beautiful display of orchid-like blooms, though, which make Hong Kong Orchid-Tree so desirable for the landscape, the large, six-inch blossoms appearing in multiple shades of purple, rose, and pink during the summer, fall and early winter months, when little color is usually present in the garden. These flowers are sterile and will not set seed so the plant will not drop long pods as other Orchid-Trees do, and they will not become a pest in the landscape. This is often the Orchid-Tree of choice for planting in urban landscapes.