Prostrate knotweed


Photo of Prostrate knotweed (Polygonum aviculare)

Polygonum aviculare (invasive)

Herb/forb, part of the buckwheat family. Invasive. Spreads out and grows flat along the ground, forming a ground cover. Flowers are too small to be seen and have colored sepals rather than petals. Each stem has a sheath at the node. Leaf shape is generally elliptical but can vary depending on moisture.

Oregon State University.

Habitat Type Tolerance Invasive?
Disturbed, mesic soils. Partial sunlight Yes