Three-way broadleaf herbicides are designed to control common lawn weeds such as dandelions, clover, and plantain while sparing most warm- and cool-season grasses. This guide highlights five top options that combine two, three, or four active ingredients to tackle a wide spectrum of broadleaf weeds and some grassy weeds. Each product is linked to its Amazon listing for quick comparison, along with key active ingredients and notable features to help you choose the right formulation for your turf care plan.
| Product | Brand | Active Ingredients (typical) | Notes |
|---|---|---|---|
| Select Source Triad Select 3-Way Broadleaf Herbicide | Primesource | 2,4-D, MCPA, Dicamba | Available in gallon size; broad compatibility with cool and warm-season grasses |
| Liquid Harvest Lawn Weed Killer | Liquid Harvest | 2,4-D, MCPA, Dicamba | 32 ounces concentrate; 3-way control; low-odor formulation |
| Select Source Triad QC Select | Select Source | 2,4-D, Dicamba, Quinclorac | Quart size; adds grassy weed control with quinclorac |
| Select Source Triad TZ | Select Source | 2,4-D, Dicamba, Triclopyr, Sulfentrazone | Four-way formulation; strong broadleaf weed activity |
| PROKoZ Inc. | Includes Trimec 992 broadleaf helpers | Broad-spectrum post-emergent; focused on broadleaf control |
These products are designed for residential lawns, turf areas, athletic fields, and other landscaped spaces. When selecting, consider your grass type, weed spectrum, application timing, and any local label restrictions. The following sections review five leading options with concise overviews, ingredient details, and practical usage notes to support informed choices.
Select Source Triad Select 3-Way Broadleaf Herbicide
Designed for use on both cool- and warm-season grasses, this 3-way formulation targets a broad range of broadleaf weeds, including dandelion, clover, and plantain. The active ingredients—2,4-D, MCPA, and Dicamba—provide a balanced approach to weed suppression while minimizing damage to established turf. The product is suitable for residential lawns and larger turf areas, making it a versatile choice for seasonal weed pressures. Application guidance emphasizes coverage and proper water volume to maximize weed contact and uptake.
Liquid Harvest Lawn Weed Killer
This 32-ounce concentrate delivers a three-way weed control solution capable of handling dandelions, clover, and other broadleaf weeds while protecting lawn grasses. The formulation emphasizes ease of use and a lower odor profile, which can improve the application experience in typical backyard settings. With 2,4-D, MCPA, and Dicamba as its active ingredients, it provides robust post-emergent control across a broad weed spectrum, making it a solid option for homeowners dealing with persistent broadleaf invaders.
Select Source Triad QC Select
This 3-Way herbicide leverages 2,4-D, Dicamba, and Quinclorac to tackle both broadleaf and some grassy weeds, offering a practical late-season cleanup option for turf areas that missed early pre-emergent applications. Ideal for lawns, athletic fields, and parks, QC Select emphasizes versatility in weed control across diverse turf settings. The inclusion of quinclorac helps address stubborn weeds that are less responsive to other mixes, supporting broader weed suppression over several weeks of growth.
Select Source Triad TZ
The TZ formulation offers a four-way combination that includes 2,4-D, Dicamba, Triclopyr, and Sulfentrazone. This combination expands reach to tough broadleaf weeds such as dandelion and clover while also addressing additional weed species through sulfentrazone’s broader mode of action. It is positioned for robust post-emergent control in lawns, turf, and larger landscaped areas where multiple weed species persist. Proper mixing and calibration are emphasized to ensure effective coverage without stressing desirable grasses.
ALLIGARE 2,4 D Amine Herbicide
This 2,4-D Amine formulation focuses on efficient broadleaf weed killing. With a high concentration of 2,4-D Amine, it targets a wide array of common lawn weeds. While not a full four-way blend, this option emphasizes reliable post-emergent control and is suitable for homeowners seeking a straightforward, effective broadleaf herbicide. Consider combining with compatible cultural practices to maximize turf resilience after treatment.
Vessel 3 Way Herbicide
Vessel 3-Way provides rapid control of common broadleaf weeds such as clover, dandelion, and plantain. Marketed under PROKoZ Inc., this product combines multiple active ingredients for broad-spectrum post-emergent activity in turf. It is positioned for lawn maintenance programs where swift weed suppression is desired to restore uniform grass cover. The focus is on effective weed knockdown with attention to avoiding excessive grass injury when used as directed on labeled turf types.
Buying Guide
Key purchase considerations include weed spectrum, grass type, and application timing. For broadleaf-dominated weed pressures, a three- or four-way blend (2,4-D, Dicamba, MCPA, Quinclorac, Triclopyr, or Sulfentrazone) can maximize control across a range of species. If grassy weeds are a concern, look for formulations that include Quinclorac or Triclopyr, which provide some grassy weed activity alongside broadleaf control. Size and label compatibility matter: quart or gallon bottles work well for larger areas, while smaller sizes suit maintenance patches. Environmental considerations, such as odor and runoff potential, may influence product choice and timing. Always follow label directions for rate, water volume, and re-entry intervals.
The following comparisons help illustrate practical differences among these options:
- Three-way blends (2,4-D, Dicamba, MCPA) are typically strong for broadleaf weeds with broad turf compatibility.
- Quadruple blends add Triclopyr or Sulfentrazone for tougher weed species and broader turf coverage.
- Additional ingredients like Quinclorac can improve control of certain grassy weeds and specific broadleaf species.
- Concentrates vary in odor and mixing requirements; always measure accurately and calibrate sprayers.