Maybe one or two companies using tenacity for weed control and crab. Tenacity herbicide will allow lawns to look well from the beginning. The tenacity weed control was an amazing choice and if it weren’t for the former, I would think this is the best. It looks horrendous and worst of all it doesn't even look like its even killing the crab. See label for a … Tenacity is one of the best systemic herbicides on the market today. It needs to reach the soil to work as a pre-emergent. Tenacity Turf Herbicide will kill grassy weeds and won’t kill lawn grass. Hit a dandelion once with 2,4-D, and it's done. If you don’t water it in you’re essentially using it as a post-emergent. Crabgrass is an annual weed that frustrates homeowners year after year. I'm also not sure how the pre-m part of tenacity will stunt the bermuda from coming up. Tenacity weed killer can be used as a pre-emergent herbicide or as a post-emergent program control. Move along. Tenacity Weed Killer Overview. Tenacity’s herbicide actually includes a formula that starts affecting the weeds while they’re still in the ground. There is a 40% mesotroine in this formula which makes it perfect for the tenacity lawn. But again I'm not sure how it interacts with centipede. What to do? However, this grass is simply the best for Turf Grass. Tenacity will work on crabgrass and likely several (if not all) of the other weeds listed. Tenacity can be applied to existing weeds at seeding and provide residual control to continue keeping lawns and turfs looking good. The need for repeat applications of Tenacity is very clearly discussed both on the label and in literature. 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. Its active ingredient, mesotrione, is based on a naturally occurring compound produced by the bottlebrush plant (Callistemon citrinus) that … To apply tenacity as a pre-emergent you want to blanket spray the whole lawn and then water in the application. Tenacity pre-emergent It’s a systemic herbicide which doesn’t mean much to you I know. It can be used to remove crabgrass, nimbleweed, bentgrass and other difficult to control weeds. Hit mature crabgrass once with Tenacity or Drive XLR8, and you set it back some but it recovers. 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. The obvious thing: hit it again. Tenacity herbicide can be used for pre- and post-emergence control of more than 46 broadleaf weed and grass species. So pretty much you spray your mix onto the weeds and the weeds absorb the control through the leaves and root system. 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