Tree wisteria

Bolusanthus speciosus, commonly known as Tree wisteria, is a deciduous ornamental tree that prefers full sun and medium watering. It is suitable for USDA zones 7–9, growing to a height of 5–10 meters. This tree blooms in spring with striking purple and blue flowers. It thrives in loamy, clay, or chalky soils. It is not fragrant, but attracts pollinators, and is non-toxic.