Can Saint Augustine grass and Bermuda grass coexist?

Answer 1

Saint Augustine grass and Bermuda grass can coexist but there will be issues. Saint Augustine grass needs less fertilizer and usually grows faster. So it could make mowing the grass a frequent chore.

Answer 2

Speaking from experience: If you cut the Bermuda grass really low - as low as possible and pack the St Augustine in well you will have success, however you could develope shallow roots and fungus **especially if the Bermuda is not cut really low**. Your grass will appear to not be growing, and brown patches will appear and the Bermuda will begin to grow thru the St. Augustine and eventually take if not challenged. My brother cut his Bermuda low before hand, I didn't...his took, my is struggling as decribed above. I put in some palm trees (removed the Bermuda where the holes were dug) and guess what, those are the only places in my yard where the St Augustine looks the way I imagined!

For best results, remove the Bermuda.