water smartweed

Also known as Longroot Smartweed, Water Knotweed, Amphibious Bistort

Water smartweed morphs dramatically depending on whether it grows submerged in ponds or on muddy shorelines. Aquatic forms sprout smooth, glossy floating leaves and erect pink flower spikes that rise above the surface, while terrestrial forms develop hairy stems and upright foliage. Deep rhizome networks anchor colonies in muddy substrates, providing crucial habitat for fish fry and aquatic larvae.