3 yr 12-16". Koelreuteria paniculata is a species of flowering plant in the family Sapindaceae, native to eastern Asia, in China and Korea. It was introduced in Europe in 1747, and to America in 1763, and has become a popular landscape tree worldwide. This is a highly recommended shade tree for its tidy habit and well-behaved root system. Its deep, non-invasive roots make it an approved street tree in many cities. Plant in narrow parkways and near patios. A good tree to plant under. Very tolerant of poor soil and easy to care for. Long panicles of fragrant flowers are followed by attractive, papery, lantern-like seed pods. A very effective and versatile landscape specimen. Deciduous. Flowers in late summer. Zone 6-9