Bob from Ft Worth Tx writes
Established st augustine/ Tiff 419 lawn
Hi-Yield Weed and Grass Stopper with Dimension Herbicide is labeled for use on both St augustine and bermuda grass so it will not work to stop the germination of Bemuda.
Unfortunately Bermuda grass is so closely related to St. Augustine grass that there is nothing that will remove Bermuda from St. Augustine and not hurt the Bermuda as well. In your situation it is recommended to spot treat the Bermuda with Round Up and kill it directly, and then replant St. Augustine in those areas. We do carry some professional round up products: http://www.domyownpestcontrol.com/nonselective-herbicides-c-188_408.html
Answer last updated on: 09/12/2013