3-Way Lawn Weed Killer

3-Way Lawn Weed Killer, manufactured by CSI, is a liquid post-emergent herbicide that eliminates selective broadleaf weeds in cool-seasoned and warm-seasoned turfgrasses within golf courses, sod farms, home lawns, and other non-crop sites.

This multi-purpose product combines three active ingredients: 2,4-D 30.56%, mecoprop-p 8.17%, and dicamba 2.77%, which gives control over 33 types of broadleaf weeds such as ground ivy or ragweed.

3-Way Lawn Weed Killer is a low-odor product that can easily be applied to numerous sites through spot or broadcast applications.

Tools Needed

To use 3-Way Lawn Weed Killer, you will need either a handheld pump sprayer or a backpack sprayer. For spot applications, use a handheld pump sprayer, while broadcast applications may be done with a backpack sprayer.

Aerial application is prohibited. This product cannot be applied through any type of irrigation equipment.

How to Use

• Step 1: For best results, turf should not be mowed for 1 to 2 days before and after application. Determine how much 3-Way Lawn Weed Killer to use by calculating the square footage of the treatment site. To find this, measure the length and width of the treatment area in feet and multiply (length X width = square footage). For acreage, divide the square footage by one acre (square footage / 43,560 = acre). The application rate for cool-seasoned grasses and listed warm-seasoned grasses is 1.1 to 1.5 oz. of 3-Way Lawn Weed Killer per 0.5 to 5 gallons of water per 1,000 sq. ft. For acreage applications of cool-seasoned grasses and listed warm-seasoned grasses, use 3 to 4 pints per 5 gallons of water per acre. For dormant St. Augustine and Centipedegrass, apply 0.75 to 0.9 oz. of product per 0.5 to 5 gallons of water per 1,000 sq. ft. Acreage applications for dormant St. Augustine and Centipedegrass, will use 2 to 2.5 pints of product per 4 gallons of water per acre. Refer to the label for specific application rates for ornamental turf and those grown for seed or sod.
• Step 2: Fill your sprayer halfway with the required amount of water, add the measured amount of 3-Way Lawn Weed Killer, and then pour in the remaining half of water. Agitate the sprayer until the solution is evenly mixed.
• Step 3: Spray the top and bottom of leaves and stems until wet, but not to the point of run-off. Avoid overapplication of treated areas to prevent turf injury. Reseed no sooner than 3 to 4 weeks after application of this product.

Where to Use

3-Way Lawn Weed Killer may be used in turfgrasses on golf courses (fairways, aprons, tees, roughs), sod farms, highways, right-of-ways, residential lawns, industrial lawns, institutional lawns, ornamental turfs, parks, cemeteries, athletic fields, turf grown for seed or sod, and non-cropland (fence rows, hedgerows, roadsides (including aprons and guardrails), ditches, right-of-ways, utility, power lines, railroads, airports, and industrial sites).

Do not use this product in or near greenhouses or within 25 feet of rivers, fish ponds, lakes, streams, reservoirs, marshes, estuaries, bays, and oceans. You may also not spray on newly seeded grasses until well-established.

Avoid product mist to vegetables, flowers, ornamentals, shrubs, trees, and other desired plants. Do not pour spray solutions near these plants.

When to Use

Use 3-Way Lawn Weed Killer when the grass is well-established and weeds are actively growing, preferably in May or mid-August through September. Apply on calm days when temperatures are low (below 80 degrees Fahrenheit) and when rainfall is not predicted for at least 4 hours after application.

Apply only to dormant St. Augustinegrass (common, Raleigh, and Seville varieties grown in TX, LA, MS only) and dormant centipedegrass (TX, LA, MS only.)

Safety Information

3-Way Lawn Weed Killer is safe to use around children or pets when applied according to the product label instructions. Always wear the appropriate personal protective equipment (PPE) when mixing or applying this product.

Do not enter or allow workers to enter treated areas until 48 hours after the first application.

Do not allow people (other than applicator) or pets on treatment area during application or enter treated areas until sprays have dried.

Special Considerations

For use by turf maintenance personal, landscaping, or commercial applicators only.

Slight yellowing of turf may appear, but will disappear in about one week.

Some hybrid bermudagrass may be sensitive to this product.