Polygonum, also known in floral design as knotweed or Persicaria, features long, arching stems with tiny clustered blooms or seedheads in hues of soft pink, burgundy, or green. Its natural, flowing structure adds movement, texture, and a wild, foraged look to bouquets and installations.

Often used in modern meadow-style arrangements or organic event florals, Polygonum brings a gentle, untamed grace that pairs beautifully with both bold and delicate flowers.