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.
With few restrictions around applications, Tenacity herbicide may be applied to labeled turfgrasses anytime up to, during and after seeding, prior to emergence. Tenacity is one of the few herbicides that controls weeds during the seeding process and provides pre-emergence and some post-emergence control of many weeds.
Read the complete product label for Tenacity
Contains 8 ounces.
Weeds controlled by Tenacity:
• Common chickweed
• Common dandelion
• Creeping Bentgrass
• Crabgrass- large, smooth & Southern
• Florida betony
• Ground Ivy
• Large hop clover
• Lawn burweed
• Mouseear chickweed
• Speedwell – Persian, purslane
• Annual bluegrass suppression
• Shepherd’s purse
• White clover
• Wild violet
• Yellow nutsedge
Keys to Success
1. Apply Tenacity at 5-8 fl. oz/acre (4 oz/acre St. Augustine grass for sod production only) approximately one (1) week prior to, during, or after seeding. A good quality non-ionic surfactant is recommended if weeds are present at time of application.
2. Repeat application after 2nd mowing or 3 to 4 weeks after emergence.
3. Use the low rate (5 oz/acre) for existing stands containing greater than 50% ryegrass or fine fescue. Do not use on seed mixtures containing more than 20% fine fescue by weight.
4. Short term, transient whitening may result from Tenacity applications. Tenacity’s mode of action prevents production of chlorophyll (green color) in new leaf tissue that develops after application. This may occur in new seedlings of the desired turfgrass. The effect is temporary. With regular mowing, white tissue disappears.