knotweed white flowers, persicaria polymorpha

plant flower tree shrub branch blossom leaf wildflower evergreen herb garden spring lilac nature spruce persicaria polymorpha knotweed white flowers beautiiful blooming plumes period junejuly reaches height 150 200 june july centimeters floral background summer fluffy sunlight decorative landscape design flowering blurred natural green leaves growth growing beauty bloom herbal decoration floriculture botany botanical abstract freshness small big unpretentious fastgrowing large perennial lush inflorescences hedge lawn day outdoors panicle light