Prostrate knotweed – Polygonum aviculare
Print
EmailPolygonum aviculare L.
Polygonaceae (Smartweed family)
MI Status
Non-native
Life cycle
Prostrate, mat-forming summer annual.
Leaves
Alternate, narrow oval to oblong leaves with pointed tips, smooth margins and short petioles.
Stems
Prostrate, tough, wiry stems with distinct nodes are highly branched and mat-forming. Plants perform well in compacted areas. A membranous sheath (ocrea) surrounds the stem at the base of each petiole.
Flowers and fruit
Small, inconspicuous flowers are white to pinkish and clustered in the leaf axils. The seed is enclosed in a single-seeded, dark reddish brown, three-sided fruit.
Reproduction
Seeds.
Other Documents in this Series
You Might Also Be Interested In
-
Celebrating 100 years of Michigan State University Extension in Alcona County
Published on October 19, 2017
-
Protecting Michigan’s environment and wildlife through the Conservation Reserve Enhancement Program
Published on September 1, 2021
-
Impacts made in Clare County through Michigan State University Extension
Published on June 15, 2018
-
MSU named Top 10 agriculture and forestry college in new report
Published on March 23, 2021
-
Inspired and in-person: face-to-face programming returns for Michigan 4-H
Published on August 25, 2021
Accessibility Questions:
For questions about accessibility and/or if you need additional accommodations for a specific document, please send an email to ANR Communications & Marketing at anrcommunications@anr.msu.edu.