Post-Emergent Herbicides
Post-emergent herbicides kill weeds that have already germinated and are actively growing. Apply when air temperatures are 55-85°F, wind is below 10 mph, and no rain is forecast for 24 hours.
Broadleaf Weed Control
| Product | Form | Coverage | Cost | Tier | Buy |
|---|---|---|---|---|---|
| Celsius WG (Thiencarbazone + Iodosulfuron + Dicamba) Thiencarbazone-methyl + Iodosulfuron-methyl-sodium + Dicamba | WDG (mix & spray) | 10 oz · ~1 acre | $80-120 | Premium | |
| Spectracide Weed Stop for Lawns + Crabgrass (Atrazine) Atrazine | Liquid | 32 oz · ~5,000 sq ft | $15-25 | Budget | |
| Triclopyr (Crossbow / Ortho Weed B Gon Chickweed, Clover & Oxalis Killer) Triclopyr | Liquid | Varies | $15-30 | Community Gold | |
| Trimec / Triad Select (3-Way Broadleaf Herbicide) 2,4-D + Dicamba + Mecoprop | Liquid | 1 qt · ~16,000 sq ft | $20-40 | Community Gold |
Affiliate disclosure: we may earn from qualifying purchases.
Grassy Weed Control
Imazaquin
Nutsedge, crabgrass, and broadleaf weeds in warm-season lawns
$15-25
Quinclorac
Killing emerged crabgrass at any growth stage, plus some broadleaf weeds
$30-60
Sedge Control
Halosulfuron-methyl
Yellow nutsedge and purple nutsedge control
$15-25
Affiliate disclosure: we may earn from qualifying purchases.
Why these products?
Our recommendations come from community consensus across lawn care forums, real-world testing results, and verified product performance. We include options at every price point so you can choose what fits your lawn and budget.