Prostrate knotweed is a wiry, low weed that grows in compacted soil along paths, driveways, and play areas.
- Scientific name
- Polygonum aviculare
- Type
- Summer annual broadleaf
- Most visible
- March–September
How to Identify Prostrate Knotweed
- Small, blue-green, oblong leaves
- Wiry stems with papery sheaths at joints
- Tiny white-pink flowers
- Grows flat in compacted areas
When It Shows Up in Oklahoma Lawns
One of the first summer annuals to germinate in early spring.
How to Control Prostrate Knotweed
- Aerate compacted soil
- Apply pre-emergent in late winter
- Spot-treat with a selective herbicide labeled for the weed and safe for your grass type, following the label exactly