Water Knotweed, Longroot Smartweed, Water Smartweed
Longroot Smartweed or Water Knotweed can grow in water and on land. The pictures in this article show the land form. It differs from the aquatic form.
Persicaria amphibia is a perennial plant. The land form grows flat to ascending, its shoots reach between 30 and 100 centimeters in length. The flowering period in Central Europe can last from June to September. The leaves have short stems.
Characteristics & Description
Height, habit: Herbaceous plant, perennial, 30 to 100 centimeters
Poisonous: No
Origin: Africa, Asia, Europe, North America (distribution map)
USDA zone: 5 (-9.4 °F/-23 °C)
Botany
Name: Persicaria amphibia (syn. Persicaria amphibia var. terrestris)
Family: Polygonaceae
Categories: Red & Pink Flowers | Wildflowers |
