Mat Forming Knotweed

Prostrate mat forming summer annual.

Mat forming knotweed. Prostrate knotweed also forms a dense mat. An annual or perennial mat forming weed that grows year round. It usually thrives in dry compacted soils. Persicaria affinis lesser knotweed is a mat forming semi evergreen perennial boasting charming spikes 3 in.

Prostrate spurge is often confused with purslane or prostrate knotweed. However knotweed has bluish green leaves and does not emit a milky sap. Once a knotweed rhizome fragment stem section or seed least common lands on a suitable site the weed can grow rapidly. They remain in place on the plant and provide winter interest.

The annual flowers from late spring until frost and is found throughout the united states. It is often confused with spurge. Mat with herbicide and mowing treatments applied in summer or fall at mcfarland wisconsin. Plants perform well in compacted areas.

Blooming for weeks from midsummer into fall the blossoms are borne above the foliage mat of elliptic to lance shaped deep green leaves which turn bronzy red in the fall. Polygonaceae smartweed family life cycle. Prostrate knotweed polygonum aviculare is a low growing summer annual or perennial which is very competitive in compacted soils. The flowers develop in small clusters flowering predominantly in autumn and spring.

Blooming for weeks from midsummer to mid autumn they open deep rose red fade to pale pink as the season progresses before turning brown in the fall. Prostrate tough wiry stems with distinct nodes are highly branched. Knotweed knotweed is an annual weed common along sidewalks. It is often a problem along driveways sidewalks and beaten paths.

The weed is very distinct with its wiry branches that have alternate oblong to oval green leaves that are 5 12 mm long and white to pink flowers. Leaves are smooth oblong to linear in appearance and joined to the stem by a sheathing membrane. Alternate narrow oval to oblong leaves with pointed tips smooth margins and short petioles. A cut stem landing on moist soil or grass can develop root and shoots forming a new plant.

Purslane flowers are yellow and it has fleshy stems and leaves. Knotweed forms a tough wiry mat of stems and blue green leaves with small white flowers. Vigorous persicaria affinis superba lesser knotweed is a mat forming semi evergreen perennial boasting charming spikes 3 in. The slender stems radiate from a central taproot and produce a tough mat like growth.

Alternate narrow oval to oblong leaves with pointed tips smooth margins and short petioles. Prostrate mat forming summer annual. Prostrate knotweed polygonum aviculare. Long 8 cm densely packed with tiny pale pink flowers that deepen to crimson as they mature.

Prostrate tough wiry stems with distinct nodes are highly branched and mat forming. Purslane and spurge are often found growing together. Hogweed knotweed and prostrate knotweed.