Choosing an effective broadleaf weed killer helps maintain a healthy, lush lawn. This guide reviews five leading products designed to control common lawn weeds—like dandelion, clover, and chickweed—without harming most cool- and warm-season grasses when used as directed. Each option below targets broadleaf weeds with fast-acting results and broad coverage, making it easier to protect your turf all season long.
| Product | Brand | Coverage / Size | Key Highlight |
|---|---|---|---|
| Ortho WeedClear Lawn Weed Killer Ready-To-Spray | Ortho | 32 oz | Fast-acting, kills listed weeds to the root |
| BioAdvanced Lawn Weed Killer Ready-to-Spray | BioAdvanced | 32 oz | Kills over 200 weeds, roots included |
| Ortho WeedClear Weed Killer for Lawns with Comfort Wand | Ortho | 1 gal | Over 250 weeds, targeted spot treatment |
| PBI/GORDON Trimec Lawn Weed Killer | PBI / Gordon | 1 gal | Covers hard-to-control lawn weeds |
| Spectracide Weed Stop For Lawns Plus Crabgrass Killer | Spectracide | 1 gal | Kills 470+ weeds, rapid visible results |
Below are five detailed product profiles. Each section highlights how the product works, where it’s most effective, and practical usage notes to help you choose the right broadleaf weed killer for your lawn type and region.
Ortho WeedClear Lawn Weed Killer Ready-To-Spray
Ortho WeedClear provides fast-acting, root-level weed control for common lawn weeds including dandelion, clover, crabgrass, and chickweed. The ready-to-spray formula is designed for broadcast application while protecting established turf when used as directed. It’s suitable for several lawn grasses such as Bermudagrass, Zoysiagrass, and Kentucky Bluegrass, which helps reduce the need for multiple products in mixed lawns. Apply according to label directions for best results and to minimize any turf stress.
BioAdvanced Lawn Weed Killer Ready-to-Spray
BioAdvanced Lawn Weed Killer is formulated to kill listed weeds down to their roots and can cover up to 8,000 square feet per treatment. It claims broad efficacy, targeting dandelion, clover, dollarweed, chickweed, and more, with a simple one-application approach that aims to protect your lawn when used as directed. This option is well-suited for homeowners seeking broad weed control with a single preventive/curative application.
Ortho WeedClear Weed Killer for Lawns with Comfort Wand
This Ortho product emphasizes convenience with a Comfort Wand application system and a broad weed spectrum—over 250 listed weeds including dandelion and clover. It targets weeds down to the root while aiming to spare the lawn when used as directed. Notable is the emphasis on spot treatment capabilities, making it practical for uneven weed patches or lawns with mixed turf varieties. Check compatibility with your grass type to ensure best results.
PBI/GORDON Trimec Lawn Weed Killer
PBI/Gordon Trimec focuses on hard-to-control lawn weeds with a formulation designed for cool-season grasses. The product comes in a one-gallon container, supporting larger lawns or multiple applications per season. It is positioned as a reliable choice for more stubborn perennial broadleaf weeds and for homeowners seeking a dedicated lawn weed killer that targets tough weed species.
Spectracide Weed Stop For Lawns Plus Crabgrass Killer
Spectracide Weed Stop For Lawns Plus Crabgrass Killer is a ready-to-use gallon that targets a broad weed spectrum, including crabgrass, dandelion, clover, and chickweed, while helping to protect the lawn when used as directed. It’s highlighted for delivering visible results in a short time window and for handling both broadleaf and some grassy weeds that commonly threaten lawn health. This option is suitable for homeowners who prefer a straightforward, ready-to-use product with broad coverage.
BioAdvanced Season Long Lawn Weed Killer + Preventer (Southern Lawns)
BioAdvanced Season Long Lawn Weed Killer + Preventer is designed for Southern lawns, offering weed control plus a preventative component for up to six months. It treats up to 4,000 square feet and emphasizes compatibility with St. Augustinegrass and Floratam varieties. This option is best for regions with persistent weed pressure and warm-season grasses that require longer-lasting protection from emerging broadleaf weeds.
Buying Guide
Key purchase considerations for broadleaf lawn weed killers include weed spectrum, lawn type compatibility, application method, and coverage area. For broader weed lists, products like BioAdvanced and Spectracide Weed Stop provide extensive weed tallies, while Ortho’s formulations offer convenience with ready-to-spray or wand-based application. Always read the label to confirm suitability for your grass species (cool-season vs warm-season) and to follow safety precautions for pets and children. Consider whether you need broadcast coverage or targeted spot treatment, and note seasonal timing for maximum effectiveness.
- Weed spectrum: How many weed types are listed and whether the product targets crabgrass explicitly if it’s a lawn concern.
- Lawn compatibility: Ensure the product is safe for your grass variety and avoid Floratam if using St. Augustinegrass.
- Application method: Ready-to-spray vs concentrate with mixing; wand or handheld spray vs hose-end applicator.
- Coverage and duration: Look at square footage coverage and whether the product provides immediate or long-lasting results.
- Safety and precautions: Follow label directions for irrigation, mowing schedules, and child/pet safety.