Perennial

Type:Perennials
Common Name:Knotweed
Variety:polymorpha
Botanical Name:Persicaria
Zone:4 to 9
Mature Size:4-6’
Exposure:Sun/Pt Shade
Blossom Color:White
Bloom Time:Jun-Sep
Notes:Very bold, clump-forming knotweed that is covered in showy, loose plumes of creamy-white flowers from early summer to fall. The flowers have a similar appearance to Aruncus dioicus. Very tolerant of extreme heat, humidity, and drought. 4-6 feet. Best in sun to part shade in moist soil.