Q. My nurseryman has convinced me that it works well to kill the St. Augustine grass with Roundup and then plant the Asiatic jasmine or other groundcover into the killed sod. I still have a question about how quickly I can plant the groundcover into the sprayed sod. Does the grass need to be completely dead and brown?
A. I agree with your nurseryman that planting the groundcover into the killed sod works well to convert a lawn to a groundcover. I have planted into the treated sod within five days of the application of the Roundup. The groundcover transplants are safe if the Roundup has dried on the sprayed sod.