Plant: Herb - 2-4 meters
Leaves: Alternate, tear-drop shaped, sharp pointed, dark green, flattened at base
Seed Flowers: Flowering stalk of many small greenish-white flowers
Buds / Stem: Large plant with 'bamboo' like stem. Stem is light green maturing to a tan colour. Stems are upright with a hollow core, smoth and often branching
Habitat: Moist to wet soils found in wetlands, water courses and roadside ditches
Similar Native Species: Non
Japanese knotweed is an invasive species - a noxious plant introduced from Asia. This weed often forms dense colonies. It thrives in temperate climates such as Vancouver. The plant can rip up driveways, crack foundations and drive though 2 metre thick concrete.
Invasive Species >