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VPG
Hi-Yield Atrazine Weed Killer RTS
Hi-Yield Atrazine Weed Killer RTS is a pre- and post-emergent liquid herbicide that controls the toughest weeds during the dormant and active growing seasons of St. Augustinegrass or Centipedegrass.
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Hi-Yield Atrazine Weed Killer product page
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10/14/25
10/14/25
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Hi-Yield Atrazine Weed Killer RTS, manufactured by VPG, is a ready-to-use liquid herbicide that uses the active ingredient atrazine 4.00% and related compounds 0.08% to kill various types of emerged weeds and weeds from seeds through foliar or root contact.
As a powerful herbicide, Hi-Yield Atrazine Weed Killer RTS will quickly eliminate or suppress weeds such as chickweed or crabgrass when your St. Augustine or Centipedegrass is in their season of growth or dormancy.
Hi-Yield Atrazine Weed Killer RTS provides fast and superior control over the toughest post-emergent and pre-emergent weeds with one easy application.
Tools Needed
You will need a hose to connect this product to.
How to Use
- Step 1: Determine how much Hi-Yield Atrazine Weed Killer RTS to use by measuring the square footage of the treatment areas. To do this, measure the length and width of the treatment area in feet, then multiply them together (length X width = square footage). A general application will use 5 tsp. of Hi-Yield Atrazine Weed Killer RTS per 1 quart of water for a 100 sq. ft. For the maximum application rate on turfgrass, apply 8.6 oz. of product per 2 gallons of water per 1,000 sq. ft. No more than two applications per year can be made. Do not apply one quart of this product to an area less than 3,720 sq. ft.
- Step 2: Shake the Hi-Yield Atrazine Weed Killer RTS well before applying it, then connect it to a hose and turn on the water.
- Step 3: To begin spraying, point the nozzle in the direction you want to spray. Turn the knob clockwise to the ON position. Spray evenly to the area to be treated. Refer to the clear view strip on the side of the container to determine the amount of product sprayed. To stop spraying, turn the knob counterclockwise to the OFF position.
Where to Use
Use Hi-Yield Atrazine Weed Killer RTS on St. Augustinegrass or Centipedegrass within residential lawns.
When to Use
This product is best applied during early spring or dormant periods when small weeds have not yet emerged. Rain or water within 2 or 3 days of application may decrease the effectiveness of emerged weeds. However, rainfall or watering is necessary to control weeds from seeds within 7 to 10 days after treatment.
Do not replant treated areas (except with listed turfgrass) within 12 months after treatment, or injury may result. Additionally, do not overseed turf areas within 6 months after treatment.
Safety Information
Hi-Yield Atrazine Weed Killer is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Do not allow people or pets to enter the treated area until sprays have dried.
Special Considerations
Hi-Yield Atrazine Weed Killer can only be used on established St. Augustinegrass or Centipedegrass. Applications to other types of turf may result in damage or death of lawns.
This product may be applied during the summer but is limited to spot treatment only.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 32 Ounce: AK, AZ, CA, CO, CT, DE, HI, IA, ID, IL, IN, MA, MD, ME, MI, MN, MT, ND, NE, NM, NV, NY, OH, OR, PA, RI, SD, TX, VT, WA, WI, WV, WY |
| Brand | VPG |
| Keith's Pro Tips | "Aerate your yard with aeration sandals or a tiller to help loosen compacted soil. By aerating your yard, Hi-Yield Atrazine Weed Killer RTS can travel throughout your soil more easily." |
| Product Drawbacks | Hi-Yield Atrazine Weed Killer RTS cannot be used with other chemical products or on lawns infested with insects, nematodes, and diseases. |
| Target Pests | Annual Bluegrass (Poa annua), Chickweed (Common and Mouseear), Crabgrass (suppression only), Cransbill, Cudweed, Dichondra, Florida Betony, Henbit, Knotweed, Lespedeza, Moneywort, Mustards, Narrowleaf Vetch, Parsley-Piert, Pennywort (Dollarweed), Sandspur, Smutgrass, Spurge, Spurweed, Swinecrest, Woodsorrel and various annual clovers. |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Application Methods | Spot Treatment |
| Active Ingredient | Atrazine 4.00%, and related compounds 0.08% |
| Product Type | Herbicide |
| Formulation | Ready-To-Use |
| Application Rate | A general application will use 5 tsps. of Hi-Yield Atrazine Weed Killer per 1 quart of water for a 100 sq. ft. For 500 sq. ft. you will use 4.3 oz. of product per 1 gallon of water. Applications with areas of 2,000 sq. ft. use 1.1 pt. of product per 4 gallons of water. For the maximum rate of application on turfgrass, apply 8.6 oz. of product per 2 gallons of water per 1,000 sq. ft. No more than two applications per year can be made. |
| Shelf Life | Hi-Yield Atrazine Weed Killer RTS will last up to 3 years when stored in its original container within a cool, dry environment that can be locked up. |
| Yield | One quart of Hi-Yield Atrazine Weed Killer RTS will cover 3,720 sq. ft. |
| Use Sites | Outdoors |
| Time to Kill | Results will generally be seen several days after application and Hi-Yield Atrazine Weed Killer RTS has had time to seep through the soil to eliminate germinating weeds. A follow-up application is not necessary until 6 months have passed after first treatment. |
| Comparable Products | Atrazine 4L Herbicide, Southern Ag Atrazine St. Augustine Weed Herbicide |
| Use Caution With | Bentgrass, Kentucky Bluegrass, Fescue, Fine, Fescue, Tall, Ryegrass |
| EPA Registration # | 19713-567-7401 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, AZ, CA, CO, CT, DE, HI, IA, ID, IL, IN, MA, MD, ME, MI, MN, MT, ND, NE, NM, NV, NY, OH, OR, PA, RI, SD, TX, VT, WA, WI, WV, WY |
| Availability | Online |
| Signal Word | CAUTION |
| Keith's Pro Tip | "Aerate your yard with aeration sandals or a tiller to help loosen compacted soil. By aerating your yard, Hi-Yield Atrazine Weed Killer RTS can travel throughout your soil more easily." |
| Target Pests Multi | Annual Bluegrass, Annual Clover, Common Chickweed, Crabgrass, Cransbill, Cudweed, Dichondra, Dollarweed, Florida Betony, Henbit, Knotweed, Lespedeza, Moneywort, Mouseear Chickweed, Narrowleaf Vetch, Parsley Piert, Pennywort, Poa Annua, Sandspur, Smutgrass, Spurweed, Swinecress, Woodsorrel, Mustard |
| Time to Kill | Results will generally be seen several days after application and Hi-Yield Atrazine Weed Killer RTS has had time to seep through the soil to eliminate germinating weeds. A follow-up application is not necessary until 6 months have passed after first treatment. |
| Chemical Type | Herbicide |
| Formulation | Ready-To-Use |
| Application Methods | Spot Treatment |
| Product Drawbacks | Hi-Yield Atrazine Weed Killer RTS cannot be used with other chemical products or on lawns infested with insects, nematodes, and diseases. |
| Active Ingredient | Atrazine 4.00%, and related compounds 0.08% |
| Application Equipment | Backpack Sprayer, Pump Sprayer |
| Mix Rate | A general application will use 5 tsps. of Hi-Yield Atrazine Weed Killer per 1 quart of water for a 100 sq. ft. For 500 sq. ft. you will use 4.3 oz. of product per 1 gallon of water. Applications with areas of 2,000 sq. ft. use 1.1 pt. of product per 4 gallons of water. For the maximum rate of application on turfgrass, apply 8.6 oz. of product per 2 gallons of water per 1,000 sq. ft. No more than two applications per year can be made. |
| Use Sites | Outdoors |
| Yield | One quart of Hi-Yield Atrazine Weed Killer RTS will cover 3,720 sq. ft. |
| EPA Registration No. | 19713-567-7401 |
| Shelf Life | Hi-Yield Atrazine Weed Killer RTS will last up to 3 years when stored in its original container within a cool, dry environment that can be locked up. |
| Comparable Products | Atrazine 4L Herbicide, Southern Ag Atrazine St. Augustine Weed Herbicide |
| Children or pets? | No |
| Property Characteristics | None |
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