1A common Eurasian plant of the dock family, with jointed creeping stems and small pink flowers. It is a serious weed in some areas.
- Genus Polygonum, family Polygonaceae: several species, in particular P. aviculare
- The main weeds dying back were creeping thistle, couch and mature knotgrass.
Definition of knotgrass in:
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.