[mntlblok]

Originally Posted by mrf6969

Originally Posted by mntlblok View Post
Good info. But, I have Empire (pretty certain that's the "brand") Zoysia, not St. Augustine. I *have* been seeing some St. Augustine lawns around that look much thicker and darker green than I've ever seen anywhere else. So, if this zoysia experiment fails. . .

Since you know you have Empire Zoysia the product that does work to kill the Bermuda and will not kill your Zoysia grass is called ORNAMEC, when used per directions of course.
I have put down 2 applications and it is doing the job. The bad news about Bermuda grass is that the roots can go down very deep, and this is why you have to be very patient with more than one application. PM me if you want to discuss.

Very interesting! That nice Lawn Forum thread that was mentioned had one poster right at the end who said basically the same about the Ornamec and zoysia. Seems mighty odd that it hasn't become universally known by now. I shall PM you. Thanks!

I did google it but the one thing that came up was a guy who had tried it with a cool weather grass and got some worrisome results.

[Northwoods]

Originally I had Zoiza, but the person who mows my lawn has introduced St.Augustine grass into my lawn. I had nothing to do with it.

[mntlblok]

Originally Posted by mntlblok

Very interesting! That nice Lawn Forum thread that was mentioned had one poster right at the end who said basically the same about the Ornamec and zoysia. Seems mighty odd that it hasn't become universally known by now. !

Aha! A bit further looking into it finds that the active ingredient for both Fusilade II and Ornamec is the same chemical - fluazifop-P-butyl.

It's now less clear to me how necessary that "safener" aspect of the Recognition product is. Wondering if that's maybe more important when using it on St. Augustine than on zoysia. Also wondering why the zoysia was apparently only used here in some sections of TV and for a limited period of time. Seems St. Augustine is the current standard for new construction.

[mntlblok]

Originally Posted by mntlblok

Aha! A bit further looking into it finds that the active ingredient for both Fusilade II and Ornamec is the same chemical - fluazifop-P-butyl.

It's now less clear to me how necessary that "safener" aspect of the Recognition product is. Wondering if that's maybe more important when using it on St. Augustine than on zoysia.

According to GreenCast

"It can also be used at reduced rates to safely remove bermudagrass from tall fescue and zoysiagrass."

Looks like that reduced rate is in the 10-20% range.

[HORNET]

As long as it is green!

[Fitnusbuf]

Originally Posted by biggamefish1

Make sure it isn't torpedo grass. if it is don't let it get into your planters! Tractor supply has a product by Image you can spray on your grass, and it is safe on Zosia.

Do you know what the herbicide is called and will it work in St. Augustine?