Quick background:
I mixed the Tenacity (actually this generic equivalent) - 1 tsp. tenacity, 3 tsp. surfactant, 3 tsp. blue, 2 gal. water - which is only supposed to treat 1,000 sq. ft. I walked the whole 4,600 sq. ft. area and sprayed most of the yard, focusing the most on spots of clover.
A week or two later, areas of grass (maybe where I sprayed more heavily) started turning white! You can clearly see in these pictures where I sprayed and where I didn't along my property line:




A couple more weeks have passed and those spots of grass are definitely struggling or dying off. To add insult to injury, there's still plenty of clover! :evil:
The appeal of Tenacity, from what I understood, was that it selectively targeted clover and weeds and not the grass. They say you can even use it as a pre-emergent along with new grass seed.
My questions:
Thanks for any help!
- Last fall: Looked upon my yard of dirt and clover, decided it was time to learn up, attended U. of youTube
- Aug: Sprayed weeds and clover with Tenacity, it worked ok I suppose
- Oct: Scalp/dethatch/aerate/level/overseed with Black Beauty Ultra. Started coming up pretty well.
- Nov: Winterizer
- April: Whoa! Grass exploded, have to mow every week! What have I done?!
Spring pre-emergent/fert, later some high N fert and lime to address a soil sample reading - June: Looking pretty great, but the original problem of clover everywhere never actually got fixed. I still had that Tenacity, so figured it would be quick and free to re-apply…
I mixed the Tenacity (actually this generic equivalent) - 1 tsp. tenacity, 3 tsp. surfactant, 3 tsp. blue, 2 gal. water - which is only supposed to treat 1,000 sq. ft. I walked the whole 4,600 sq. ft. area and sprayed most of the yard, focusing the most on spots of clover.
A week or two later, areas of grass (maybe where I sprayed more heavily) started turning white! You can clearly see in these pictures where I sprayed and where I didn't along my property line:




A couple more weeks have passed and those spots of grass are definitely struggling or dying off. To add insult to injury, there's still plenty of clover! :evil:
The appeal of Tenacity, from what I understood, was that it selectively targeted clover and weeds and not the grass. They say you can even use it as a pre-emergent along with new grass seed.
My questions:
- Any ideas what I did wrong? Maybe got the amounts wrong when I mixed it? Is Tenacity more potentially perilous to grass than I realized? Also, I've barely seen it affect the clover - is it less effective than I've heard? Should I throw this out?
- What can I do now to "apologize" to my grass and give it a boost of health before the summer heat really gets here? Could I fertilize again even though I did it in April? Any product suggestions for pure grass health? (I figure I should give it a break from any herbicides)
Thanks for any help!