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Tenacity Herbicide


Tenacity Herbicide is a systemic pre-emergence and post-emergence herbicide for the selective control of weeds in turfgrasses.

8 oz Container

Not For Sale:  NY


* Weeds controlled include crabgrass, ground ivy, yellow foxtail, yellow nutsedge and nimblewill. It also controls unwanted bed grass.

* Provides post-emergent control of tough-to-control weeds

* Controls weeds at seeding reducing weed competition

* Prevents and controls crabgrass pre or post up to four tillers

* Eliminates weeds at seeding so new grass can flourish


Preemergence Application - Apply Tenacity at 4-8 fl. oz. per acre in at least 30 gallons of water per acre prior to weed seed germination. Do not exceed 5 fl. oz. per acre per application to perennial ryegrass or fine fescues or mixed stands that contain greater than 50% perennial ryegrass and/or fine fescue. Do not exceed 4 fl. oz. per acre to St. Augustinegrass sod. Make application close to anticipated weed seed germination. Tenacity should be combined with a preemergence herbicide such as Barricade 65WG Herbicide for extended control of key annual monocot weeds such as crabgrass and foxtail. In established turf, Tenacity is more effective as a postemergence application unless combined with another soil active herbicide.

New Seedings/New Lawn Establishment – Apply Tenacity at 5-8 fl. oz. per acre in at least 30 gallons of water per acre prior to seeding or post seeding of tolerant turfgrass species listed on this label, except fine fescue. 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. 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 application.

Postemergence Application – Apply Tenacity at 4-8 fl. oz. per acre in at least 30 gallons of water per acre. Apply with a NIS type surfactant. A repeat application at two to three weeks may be required for adequate weed control. Weed control is most effective on young, actively growing weeds. Efficacy will be reduced under moisture stress or from applications to mature weeds.

Tenacity Herbicide is a systemic preemergence and postemergence herbicide for the selective contact and residual control of weeds in turfgrasses.

Control of bentgrass (Agrostis spp.) and nimblewill (Muhlenbergia schreberi) – Apply Tenacity at 5 fl. oz. per acre in at least 30 gallons of water per acre at two to three week interval for up to three applications. Apply with a NIS surfactant. Bentgrass control may be more effective in the late summer/early fall just prior to onset of renewed bentgrass growth, than spring/early summer applications. St. Augustinegrass (sod uses only) and Centipedegrass, if Tenacity is tank mixed with AAtrex (atrazine) or Princep (simazine) do not exceed 4 fl. oz. of Tenacity and 0.5 lb. active ingredient per acre of atrazine or simazine. Apply combination to established turf only. See AAtrex and Princep labels for restrictions.

Dormant bermudagrass applications only – Apply Tenacity at 5 fl. oz./A to control winter weeds (listed in the WEEDS CONTROLLED Table) on dormant bermudagrass. Repeat application in 2 to 3 weeks. Applications made to semi-dormant turf will cause whitening of the bermudagrass.

Spot Application of Tenacity (apply at 1 gallon per 1000 sq. ft.)

Target Weeds:

For the effective control of: Barnyardgrass, bentgrass (creeping), bluegrass (annual), buckhorn plantain, buttercup, carpetweed, chickweed (common), chickweed (mouse ear), clover (large hop), clover (white), crabgrass (large, smooth, southern), curly dock, dandelion (catsear and common), florida betony, florida pusley, foxtail (yellow), galinsoga, goosegrass, ground ivy, healall, henbit, lambsquarters (common), lawn burweed, marestail, nimblewill, nutsedge (yellow), oxalis, shepherd's purse, sowthistle, swinecress, verbena, wild carrot, and more!

Active Ingredients:

Mesotrione  40.0%

New product

Active Ingredients:

EPA Reg. No. 100-1267

Size: 8 oz
Class: Benzoylcyclohexanedione
Category: Herbicide, Concentrate
Manufacturer: Syngenta