Plant Problem Diagnostic
How to Control Nimblewill
The short answer
Nimblewill is a native warm-season perennial grass that invades cool-season lawns, staying brown and dormant late into spring and browning again in early fall. Because it is a grass, selective options are limited, so for small patches the practical approach is to dig or smother them out and reseed with your desired turfgrass.
Nimblewill roots at stem nodes and forms wiry patches, so remove the whole patch and monitor the edges for regrowth. Good cultural practices that thicken the surrounding lawn help it resist reinvasion.
How to identify it
Nimblewill is a thin, wiry, pale gray-green grass with short leaves held nearly perpendicular to the stem, resembling rungs on a ladder. It sprawls and re-roots at nodes, greens up late in spring, and turns brown early in fall, standing out from surrounding turf.
- Wiry, pale gray-green grass
- Short leaves at right angles to the stem
- Roots at stem nodes, sprawls in patches
- Greens late, browns early versus cool-season turf
Cultural and physical control
- 1Dig or smother small patches — Dig up and destroy small nimblewill patches, or smother them, since it re-roots at nodes and any left runners can regrow.
- 2Reseed the bare area — After removal, reseed with adapted desirable turfgrass so the gap does not re-fill with nimblewill or other weeds.
- 3Thicken surrounding turf — Follow good cultural practices to keep the surrounding lawn dense and competitive against reinvasion.
→ Selective control of nimblewill in a lawn is genuinely limited because it is a grass, so physical removal plus reseeding is often the most reliable homeowner route.
When to escalate
For larger established stands where digging is impractical, selective or non-selective chemical options exist. For chemical options consult your county Extension and always follow the label.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- Iowa State University Extension — How do I control nimblewill in my lawn? — Nimblewill control options are limited; digging up and destroying it, or destroying it and following with good cultural practices, are recommended for lawns.
- University of Maryland Extension — Nimblewill — Nimblewill is a wiry warm-season perennial grass that greens up late and browns early, roots at nodes, and spreads in patches within cool-season lawns.