Purple Robe Locust - Enjoy gorgeous flowers and comfortable shade! In spring, this stunner infuses your yard with dangling, wisteria-like clusters of fragrant, pink-purple flowers that can be clipped to make lovely bouquets. Also features young, metallic red leaves that mature to be a beautiful blue-green and provide cooling shade all summer. Cold-hardy and drought-tolerant. Matures to be 30-40' tall and 25-30' wide.