Tenacity can be applied to existing weeds at seeding and provide residual control to continue keeping lawns and turfs looking good. So pretty much you spray your mix onto the weeds and the weeds absorb the control through the leaves and root system. It needs to reach the soil to work as a pre-emergent. See label for a … The benefit of this is the herbicide affects the full cycle of the weed’s life, making it an effective solution for killing of crabgrass completely. I'm also not sure how the pre-m part of tenacity will stunt the bermuda from coming up. To apply tenacity as a pre-emergent you want to blanket spray the whole lawn and then water in the application. Tenacity Weed Killer Overview. It looks horrendous and worst of all it doesn't even look like its even killing the crab. The need for repeat applications of Tenacity is very clearly discussed both on the label and in literature. If you don’t water it in you’re essentially using it as a post-emergent. Re: Tenacity and crabgrass Post by cityofoaks » Sun Oct 04, 2020 11:59 pm The preemergent if gotten out on on time at the correct rate should leave you with very little crabgrass you actually have to spray out. Hit mature crabgrass once with Tenacity or Drive XLR8, and you set it back some but it recovers. The tenacity weed control was an amazing choice and if it weren’t for the former, I would think this is the best. Tenacity’s herbicide actually includes a formula that starts affecting the weeds while they’re still in the ground. Hit a dandelion once with 2,4-D, and it's done. Its formulation contains 40% mesotrione, which is in the grade of commercial weed killers and is capable of controlling broadleaf and grassy weeds in the lawn before and after emerging. It can be used to remove crabgrass, nimbleweed, bentgrass and other difficult to control weeds. Maybe one or two companies using tenacity for weed control and crab. There is a 40% mesotroine in this formula which makes it perfect for the tenacity lawn. However, this grass is simply the best for Turf Grass. Tenacity Turf Herbicide will kill grassy weeds and won’t kill lawn grass. Its active ingredient, mesotrione, is based on a naturally occurring compound produced by the bottlebrush plant (Callistemon citrinus) that … It removes broadleaf weeds such as clover, dandelion, and chickweed. Tenacity pre-emergent Tenacity weed killer can be used as a pre-emergent herbicide or as a post-emergent program control. Rather than alert everyone that your lawn is full of junk I'd rather do what we do and … Move along. It’s a systemic herbicide which doesn’t mean much to you I know. It should be noted that tenacity only lasts a few weeks in the soil, and it’s not the best pre-emergent. What to do? But again I'm not sure how it interacts with centipede. Crabgrass is an annual weed that frustrates homeowners year after year. 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