Tenacity Herbicide | GreenCast | Syngenta

Product Overview

Tenacity Herbicide Provides Unprecedented Freedom to Manage Weeds

Tenacity® herbicide can be used for pre- and post-emergence control of more than 46 broadleaf weed and grass species. Its active ingredient, mesotrione, is based on a naturally occurring compound produced by the bottlebrush plant (Callistemon citrinus) that inhibits photosynthesis in susceptible plant species. It is absorbed by plants through the roots, shoots and leaves and distributed throughout the plant by both xylem and phloem translocation.

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Key Features

  • Weeds controlled include crabgrass, ground ivy, yellow foxtail, yellow nutsedge and nimblewill. It also controls unwanted bentgrass.
  • Provides post-emergent control of tough-to-control weeds
  • Controls weeds at seeding reducing weed competition

Key Benefits

  • Prevents and controls crabgrass pre or post up to four tillers
  • Eliminates weeds at seeding so new grass can flourish.



Protect Your Seeding Investment From The Start

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Protecting Your Seeding Investment from the Start

With Tenacity® herbicide, you can control weeds at the same time you over-seed. Most herbicide products remove weeds from established turf, but Tenacity can also be used to prevent weeds from germinating in newly seeded or over-seeded turf. When grass seed has a chance to grow without weed competition, fall root establishment is stronger, resulting in healthier, denser turf stand in the spring.  Read more »


Synergize Weed Control with Tenacity

Tenacity® herbicide is a systemic herbicide for pre and post-emergence grass and broadleaf weed control in several cool and warm-season turf species.  Read more »


Tenacity + Princep + Pennant Magnum: A Triple Threat for Goosegrass in Florida

Goosegrass is one of the toughest weeds in golf course turf. It is a prolific seed producer, germinates under a wide range of soil temperatures, matures quickly and thrives in compacted soils where the desired turf cannot compete. It would make an excellent playing surface, if it only had a better cold tolerance!  Read more »

Download Supporting Tenacity Documents

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Goosegrass Information Sheet(PDF)

Control goosegrass with Tenacity, Princep and Pennant Magnum herbicides.

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Hydroseeding Information Sheet(PDF)

Tenacity can be added to a hydroseeding mix to control grass, nutsedge and broadleaf weeds at establishment.

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Tenacity Information Sheet(PDF)

Tenacity can be applied anytime you are seeding giving new grass a chance to flourish.