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Tenacity Herbicide

A herbicide for the selective contact and residual control of weeds in ornamental turfgrasses

Tenacity Logo
Tenacity is a selective pre and post-emergent herbicide concentrate that targets a variety of weeds such as Chickweed, Clover, Crabgrass, Dandelion, Foxtail, Henbit, and Nutsedge. Its mode of action prevents photosynthesis in plants.

This herbicide is a miracle of science, due to the sole fact that it kills crabgrass, but doesn't affect the surrounding desirable grass.
Active Ingredient %
Mesotrione 40.00 %
Other Ingredients 60.00 %
Mode of Action
Lipid Synthesis Inhibitors
Site of Action
(1) ACCase Inhibitor
Available on Amazon

$8.37 / fl oz
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Available on Do My Own

$8.19 / fl oz
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Not Safe On
No not safe on treatments listed. Please, review the label or contact the merchant for more information.
Maximum Yearly Limits
Do not apply more than 16 oz. of Tenacity per acre per year or per crop (equivalent to a maximum of 0.50 lb. of mesotrione per acre per year), whichever is shorter.
Water Instructions
Pre-emergent control: If rainfall (0.15 inches) has not occurred within 10 days after a preemergence application, activate Tenacity with 0.15 inches of irrigation.
Before Seeding Instructions
Tenacity may reduce density of fine fescue seedings. Tenacity can be used on grass seed blends that contain less than 20% by weight of hard or fine fescue. Tenacity will control many monocot and dicot weeds that compete with and slow the establishment of the turfgrass stands. Apply at grass seeding or close to seeding for best performance.
After Seeding Instructions
Avoid spraying on newly germinated turfgrass plants. Wait until the newly germinated turf has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence Tenacity application.
Surfactant Instructions
A non-ionic surfactant should be added in postemergence applications.
CertainLabel™

Tenacity Optimized Application Label Rate Calculator

Legend:
Control
Suppression
No Control
1
Grass / Turf Types Safe
Chewings Fescue
Fine Fescue
Hard Fescue
Perennial Ryegrass
Red Fescue
1
Jump to CertainLabel™ Tenacity Label Rates & Calculator for these 5 turf types
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
0.11 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 69696 square feet
at a cost of
$0.94 per 1,000 sqft
2
Grass / Turf Types Safe
Buffalograss
Centipedegrass
Kentucky Bluegrass
Tall Fescue
2
Jump to CertainLabel™ Tenacity Label Rates & Calculator for these 4 turf types
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
0.11 - 0.18 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 69696 square feet
at a cost of
$0.94 - $1.50 per 1,000 sqft
3
Spot Treatment
Label Rate:
0.08 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.68 per gallon
Instructions:
Apply Tenacity at 5 fl. oz./A to control winter weeds on dormant bermudagrass. Repeat application in 2 to 3 weeks. Applications made to semi-dormant turf will cause whitening of the bermudagrass.
Blanket Treatment
Label Rate:
0.11 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 69696 square feet
at a cost of
$0.94 per 1,000 sqft
Instructions:
Apply Tenacity at 5 fl. oz./A to control winter weeds on dormant bermudagrass. Repeat application in 2 to 3 weeks. Applications made to semi-dormant turf will cause whitening of the bermudagrass.
4
Spot Treatment
No spot treatment rates listed. Please, review the label or contact the merchant for more information.
Blanket Treatment
Label Rate:
0.09 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 87120 square feet
at a cost of
$0.75 per 1,000 sqft
Instructions:
For use on St. Augustine grown for sod only.
1
Spot Treatment
Label Rate:
0.08 fluid ounces per gallon
Cost Effectiveness:
Makes 96 gallons
at a cost of
$0.68 per gallon
Blanket Treatment
Label Rate:
0.09 - 0.18 fluid ounces per 1,000 sqft
Cost Effectiveness:
Covers 43560 - 87120 square feet
at a cost of
$0.75 - $1.50 per 1,000 sqft
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