Golden Raintree, Panicled Golden Raintree               kol-ru-TEE-ri-a pan-ik-u-LA-ta

• Deciduous tree, 25-35ft (7.6-10.7 m), rounded outline, spreading and ascending branches, open, reddish copper-colored foliage in spring.  Leaves alternate, compound (pinnate and bipinnate), 15-20 cm long, each leaflet (2.5-10 cm long) irregularly crenate-serrate.  Flower is perfect, yellow, 4 petals, about 1 cm wide, in clusters 30-40 cm long.  Blooms in summer, early to late, apparently the time is dependent upon climate and seedling variation.   Fruit are papery capsules (green, yellow, finally light brown), 3.5-5 cm long, in clusters, persist.
• Sun, tough and adaptable.
• Hardy to USDA Zone 5      Native to China, Japan, Korea.  There is an upright form available, i.e., ‘Fasigiata’.
• Caution: Koelreuteria paniculata is considered to be invasive and a threat to native vegetation in some parts of the country.
• Koelreuteria: after Joseph Gottlieb Koelreuter (1733-1806), German professor of botany.  paniculata: with flowers in panicles.
• Oregon State Univ. campus: northwest corner Burt Hall, near entrance to parking lot.