A native of China and Japan, this herbaceous perennial species has a sprawling habit or may climb to about 3 ft (1 m) in height. The small white flowers, about 1 1/4 in (3 cm) across, are borne in erect terminal umbels, while the smooth dark brown seeds have long yellowish tails. Plant in a protected, part-shaded position.   Hardiness zone from 7 To 9                                                           (c) Beaver Multimedia - www.gardeninfo.com