Erect Knotweed

[Polygonum erectum L.]

Polygonaceae (Smartweed Family)

▲ ▼ young plants

▲ ▼  young plants

▲ ▼ close-up of stems and leaves

▲ close-up of stem and flower buds

   

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—

o   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