Erect Knotweed

Erect Knotweed

Polygonum erectum L.

Polygonaceae (Smartweed Family)

▲ seedlings

▲ ▼ young plants

▲ ▼ close-up of stems and leaves

Knotweeds

usually more of a turf or vegetable crop weed; summer annuals
inflorescences in the axils of leaves, very tiny
other small-leaved knotweed species may occur occasionally--
- erect knotweed: similar to prostrate knotweed, but with more rounded to rounded-oval shaped leaves
annual knotweeds controlled by tillage (same precautions as smartweeds), some with pre-emergent herbicides or more with post-emergent herbicides