Erect Knotweed
Polygonum erectum L.
Polygonaceae (Smartweed Family)
▲ seedlings
▲ ▼ young plants
▲ ▼ 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—
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