Highnoon Herbicide

Highnoon Herbicide, manufactured by DOW/CORTEVA,  is a powerful broad-spectrum herbicide that controls 140 broadleaf weed and woody plant species within permanent grass pastures, rangelands, and industrial sites.

Powered by the active ingredients aminopyralid 8.95% and florpyrauxifen-benzyl 0.75%, which work together to deliver effective control over challenging weed species while minimizing harm to desirable vegetation.

Highnoon Herbicide is a easy to use herbicide that provides ranchers, land managers, and county noxious weed specialist the flexibility needed for weed control in challenging dry or lush environments.

Tools Needed

Highnoon Herbicide can be used with a backpack sprayer, knapsack sprayer, or spray rig. 

How to Use

• Step 1: Determine how much Highnoon Herbicide 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 then multiply them together (length X width = square footage). For acreage, take the square footage and divide it by one acre (square footage / 43,560 sq. ft. = acres). General applications will use 0.28 or 0.46 fl. oz. of Highnoon Herbicide per 0.5 to 2.5 gallons of water per 1,000 sq. ft. Refer the label for specific application rates. 
• Step 2: Fill the spray tank with half the amount of water, add measured amount of Highnoon Herbicide, then pour in the remaining half of water. Close the spray tank and agitate until well-mixed. 
• Step 3: Spray the top and bottom of weed leaves until wet with Highnoon Herbicide, but not to the point of runoff. 

Where to Use

Highnoon Herbicide can be used on rangeland, permanent grass pastures (including grasses grown for hay), and Conservation Reserve Program (CRP); non-crop areas, for example, airports, barrow ditches, communication transmission lines, electric power and utility rights-of-way, fencerows, gravel pits, industrial sites, military sites, mining and drilling areas, oil and gas pads, non-irrigation ditch banks, parking lots, petroleum tank farms, pipelines, roadsides, railroads, storage areas, dry storm water retention areas, substations, unimproved rough turf grasses; and natural areas (open space), for example, campgrounds, parks, prairie management, trailheads and trails, recreation areas, wildlife openings, and wildlife habitat and management areas including seasonally dry flood plains, deltas, marshes, prairie potholes, or vernal pools; including grazed areas in and around these sites. 

When to Use

Apply Highnoon Herbicide when weeds are less than 2 inches tall during mid-spring and early fall. 

Do not make applications when rainfall or irrigation is expected to occur within 48 hours after application. 

Safety Information

Highnoon Herbicide 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. 

Keep people and pets out of treated areas until 48 hours have passed after application. 

Special Considerations

Injury to crops may result if treated soil and/or runoff water containing Highnoon Herbicide is washed or moved onto land used to produce crops. Exposure to this product may injure or kill susceptible crops and other plants, such as grapes, soybeans, tobacco, sensitive ornamentals.

Hay can only be used on the farm or ranch where product is applied.

Hay from areas treated with this product in the preceding 18 months cannot be used for silage, haylage, baleage, or green chop.