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PBI GORDON
Ornamec 170 Grass Herbicide
Ornamec 170 Grass Herbicide is a post-emergent selective herbicide that is designed to treat various types of grassy weed problems. It can control barnyard grass, goosegrass, crabgrass, foxtail, and other listed weeds.
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Ornamec 170 Grass Herbicide Product Page
Min : 39.55 - Max : 39.55
Price as of
09/20/25
09/20/25
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Ornamec 170 Grass Herbicide, manufactured by PBI Gordon, is a post-emergent selective herbicide that controls annual and perennial grassy weeds on landscape beds. It works systemically to control unwanted grasses in areas with ornamental plants, shrubs, trees, flowers, and ground cover.
Ornamec 170 can be safely applied "over the top" without injuring desired plants. It works fast and will hinder the growth of grassy weeds in as little as 48 hours. If you are looking for grassy weed control, Ornamec provides excellent value.
Tools Needed
You will need to mix the product into a sprayer of your choosing, such as a backpack, hose-end, or hand-pump sprayer. For the average job, a hand-pump gallon sprayer works best.
How to Use
- Step 1: Determine how much Ornamec 170 to use by measuring the square footage of the treatment area. To do this, measure the length and width of the treatment area in feet and then multiply them together (length x width = square footage). The application rates for Ornamec 170 vary depending on the weed being treated, where you are treating it, and whether you are conducting a broadcast treatment or spot treatment. For example, broadcast treatments for ornamentals, trees, shrubs, and groundcovers use 6 to 9 fl. oz. of Ornamec 170 Grass Herbicide per gallon of water per 1,000 sq. ft. Spot treatments for bermudagrass on tall fescue turf should be applied at a rate of 2 fl. oz. of product per gallon of water per 1,000 sq. ft. Refer to the label for specific application rates and restrictions.
- Step 2: Fill your sprayer tank halfway with the appropriate water level. Based on your calculations, add the correct measured amount of Ornamec 170 and the remaining half of the water. Agitate well in the sprayer to ensure it's well mixed.
- Step 3: Broadcast spray or spot treat based on the severity of your grassy weed problem, using the fan spray setting to ensure even coverage.
- Step 3: Reapply the product in 14 to 21-day intervals if weeds persist and repeat as needed for complete control all season long.
Where to Use
Ornamec 170 can control grass weeds in many newly transplanted and established ornamentals, trees, shrubs, and groundcovers.
When to Use
Apply to actively grow grass weeds before they exceed the recommended growth stages. Make applications on warm, calm days when wind speeds are low to minimize drift and when rain is not in the immediate forecast.
Do not apply this product if rainfall is expected within 1 hour of application.
Safety Information
Ornamec 170 is safe to use around pets and people when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing and applying this product.
Keep children and pets out of treated areas until the spray completely dries.
Special Considerations
Do not apply Ornamec 170 Grass Herbicide to grasses that are stressed due to moisture, temperature, low soil fertility, or mechanical/chemical injury. Always check the label before purchasing to ensure the product is listed to address your specific weed problem and if it is safe to use on your landscape.
| Availability | Online |
| Restricted Use | No |
| Shipping Restrictions | 32 Ounce: AK, HI |
| Brand | PBI GORDON |
| Keith's Pro Tips | "When using Ornamec 170 Grass Herbicide for broadcast treatment in ornamentals, trees, shrubs, and groundcovers, multiple applications might be needed; however, do not spray more than 27 fluid ounces per 1,000 square feet per season." |
| Product Drawbacks | Ornamec 170 Grass Herbicide needs to be mixed with a non-ionic surfactant to be effective. |
| Target Pests | Ornamec 170 Grass Herbicide will control Barnyardgrass, Bermudagrass, Broadleaf Signalgrass, Dallisgrass, Downy Brome, Fall Panicum, Field Sandbur, Giant Foxtail, Goosegrass, Green Foxtail, Guineagrass, Italian Ryegrass, Itchgrass, Johnsongrass, Junglerice, Kikuyugrass, Large Crabgrass, Prairie Cupgrass, Quackgrass, Rabbitfootgrass, Red Rice, Rhizome Johnsongrass, Shattercane, Smooth Crabgrass, Sorghum Almum, Southern Crabgrass, Southern Sandbur, Southwestern Cupgrass, Texas Panicum, Torpedograss, Tropical Crabgrass, Volunteer Barley, Volunteer Corn, Volunteer Milo, Volunteer Oats, Volunteer Rye, Volunteer Wheat, Wild Oats, Wild Proso Millet, Wildcane, Wirestem Muhly, Witchgrass, Woolly Cupgrass, and Yellow Foxtail. For more target pests please refer to the label. |
| Application Equipment | Pump Sprayer |
| Application Methods | Broadcast Spray, Spot Treatment |
| Active Ingredient | Fluazifop-P-butyl 1.70% |
| Product Type | Herbicide |
| Formulation | Emulsifiable Concentrate (EC) |
| Application Rate | Ornamec 170 Grass Herbicide can be mixed at a rate of 10 oz. per gallon of water. For more specific application rates please refer to the label. |
| Shelf Life | Ornamec 170 can last between 1 to 3 years in storage when kept in a cool, dry place. |
| Yield | 1 Quart Size of Ornamec 170 Grass Herbicide Covers 3,000 to 5,000 square feet when using the 6 to 9 oz. per 1,000 sq. ft. application rate. |
| Use Sites | Outdoors |
| Time to Kill | Treated grass ceases growth usually within 48 hours and dies within one to three weeks |
| Comparable Products | 2,4-D Amine |
| Use Caution With | Bentgrass, Bermudagrass, Kentucky Bluegrass, Fescue, Tall, Kikuyugrass |
| Incompatible Home Siding | Brick, Hardie Plank, Stone Veneer, Stucco, Wood, Vinyl |
| EPA Registration # | 2217-751 |
| Restricted Use | No |
|---|---|
| Shipping Restrictions | AK, HI |
| Availability | Online |
| Keith's Pro Tip | "When using Ornamec 170 Grass Herbicide for broadcast treatment in ornamentals, trees, shrubs, and groundcovers, multiple applications might be needed; however, do not spray more than 27 fluid ounces per 1,000 square feet per season." |
| Target Pests Multi | Barnyardgrass, Bermudagrass, Broadleaf Signalgrass, Corn Volunteer, Dallisgrass, Downy Brome, Fall Panicum, Field Sandbur, Giant Foxtail, Goosegrass, Green Foxtail, Guineagrass, Italian Ryegrass, Itchgrass, Junglerice, Kikuyugrass, Large Crabgrass, Oat Volunteer, Quackgrass, Rabbitfootgrass, Red Rice, Rhizome Johnsongrass, Seedling Johnsongrass, Shattercane, Smooth Crabgrass, Sorghum Almum, Southern Crabgrass, Southern Sandbur, Southwestern Cupgrass, Texas Panicum, Torpedograss, Tropical Crabgrass, Volunteer Barley, Volunteer Milo, Volunteer Wheat, Wild Oats, Wild Proso Millet, Wildcane, Wirestem Muhly, Witchgrass, Woolly Cupgrass, Yellow Foxtail |
| Time to Kill | Treated grass ceases growth usually within 48 hours and dies within one to three weeks |
| Chemical Type | Herbicide |
| Formulation | Emulsifiable Concentrate (EC) |
| Application Methods | Broadcast Spray, Spot Treatment |
| Product Drawbacks | Ornamec 170 Grass Herbicide needs to be mixed with a non-ionic surfactant to be effective. |
| Active Ingredient | Fluazifop-P-butyl 1.70% |
| Application Equipment | Pump Sprayer |
| Mix Rate | Ornamec 170 Grass Herbicide can be mixed at a rate of 10 oz. per gallon of water. For more specific application rates please refer to the label. |
| Use Sites | Outdoors |
| Yield | 1 Quart Size of Ornamec 170 Grass Herbicide Covers 3,000 to 5,000 square feet when using the 6 to 9 oz. per 1,000 sq. ft. application rate. |
| EPA Registration No. | 2217-751 |
| Shelf Life | Ornamec 170 can last between 1 to 3 years in storage when kept in a cool, dry place. |
| Comparable Products | 2,4-D Amine |
| Children or pets? | No |
| Property Characteristics | None |
*Price does not include freight. We guarantee our rate plus shipping will be less than anyone else's price.