Dealing with purple violet and other broadleaf weeds can be challenging. This guide reviews five top weed killers that are effective in lawns, driveways, and garden beds. Each product targets tough weeds, penetrates to the roots, and offers quick or residual control. Read on to compare formulations, suitability, and application notes to help you choose the right solution for your yard.
Summary of Selected Products
| Product | Brand | Type | Form | Notable Benefit |
|---|---|---|---|---|
| Spectracide Weed and Grass Killer Concentrate | Spectracide | Concentrate | Liquid | Kills weeds and grasses; fast results; rainfast in minutes |
| Bonide Chickweed, Clover & Oxalis Killer | Bonide | Ready-to-Use | Spray | Kills multiple broadleaf weeds without harming most lawns when used as directed |
| BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I (Concentrate) | BioAdvanced | Concentrate | Liquid | Kills broadleaf weeds and crabgrass down to the root |
| BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I (Ready-to-Use) | BioAdvanced | Ready-to-Use | Spray | Kills over 200 weeds; convenient sprayer application |
| Pro Crabgrass & Grassy Weed Killer (Quinclorac, 64 oz) | Liquid Harvest | Concentrate | Liquid | High concentration; rapid results; residual control |
Spectracide Weed and Grass Killer Concentrate

Spectracide Weed and Grass Killer Concentrate is designed for tough outdoor weed control. The AccuMeasure system helps you mix precisely, reducing waste and ensuring consistent concentration. It kills both weeds and grasses, making it suitable for driveways, walkways, and around posts, trees, and shrubs. Users can expect visible results in about three hours, allowing quick replanting of desired plants the same weekend. The product is rainfast within 15 minutes after application, meaning rainfall won’t easily wash away the active ingredient. This can be helpful for unpredictable spring weather.
Bonide Chickweed, Clover & Oxalis Killer

Bonide Chickweed, Clover & Oxalis Killer is a ready-to-use spray formulated to target several commonly troublesome broadleaf weeds, including chickweed, clover, oxalis, dandelions, and even wild violet. It is designed for use on established lawns where it will kill weeds at the root when applied as directed, helping to minimize re-growth. The spray nozzle makes manual application straightforward, and the product is intended for lawns rather than for broad lawn grass destruction. This makes it a convenient option for homeowners who want an easy-to-use solution with minimal mixing.
BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I (Concentrate)

BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I offers an all-in-one formula capable of controlling listed lawn weeds and crabgrass without harming the lawn when used as directed. This concentrate is designed to penetrate weeds down to the root, providing robust efficacy against over 200 broadleaf weeds. It is suitable for lawn applications and emphasizes root-level kill to reduce regrowth, making it a solid option for homeowners managing a weedy lawn that includes tough species like clover and dandelion that can accompany violet blooms.
BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I Ready-to-Use

This ready-to-use variant provides the same broad-spectrum weed control as the concentrate but comes ready in a sprayer for quick, on-demand application. The formulation targets more than 200 common weeds, enabling effective management of purple violet alongside other broadleaf nuisances. It’s especially appealing for homeowners who want a simple, no-muss application without handling concentrates or measuring liquids.
Pro Crabgrass & Grassy Weed Killer (Quinclorac) 64 oz

Pro Crabgrass & Grassy Weed Killer uses a high concentration of Quinclorac to target tough broadleaf weeds and several grassy weeds. It provides a residual control effect, helping prevent re-emergence after application. The product is versatile for lawns, gardens, and larger outdoor areas, and is marketed toward users seeking powerful, long-lasting weed suppression. Visible results typically follow application, with ongoing control reducing the need for frequent re-treatment. This option is well-suited for larger properties or areas with persistent weed pressure.
Quali-Pro EXPEL – Herbicide (32 oz)

Quali-Pro EXPEL is designed to attack sedge and other tough weeds, with claims of rapid action and broad applicability for commercial and residential sites, athletic fields, and golf courses. While it emphasizes sedge control, it also targets a wide range of weeds, providing a versatile option for areas where multiple weed species, including violet varieties, may appear. Potential users should review label instructions for site suitability and safety considerations when applying near desirable grasses or ornamentals.
Buying Guide
Key purchase considerations when selecting a purple violet weed killer include weed type, lawn health, application method, and environmental factors. Look for products that:
- Target the specific weed species present, especially broadleaf weeds like violet, dandelion, clover, oxalis, and creeping Charlie.
- Match your lawn type (fescue, bluegrass, ryegrass) and landscape goals to avoid harming desirable grasses.
- Offer clear labeling on application rates, dilution requirements, and whether the product is ready-to-use or requires mixing.
- Provide rapid visible results or residual control suited to your maintenance schedule and local climate.
- Are compatible with mulch beds, shrubs, and trees if you need a broader treatment plan around the yard.
When comparing products, consider safety, environmental impact, and the ease of use. Ready-to-use sprays are convenient for smaller areas, while concentrates suit larger lawns with precise dilution. Always follow label directions, apply under appropriate weather conditions, and protect non-target plants when treating areas with violet or other ornamentals. For stubborn patches, you may combine a selective approach for lawn care with targeted post-emergent treatments to minimize damage to turf.