Q: How do I prevent fescue grass from growing in my bermuda grass sod yard? 

A: The easiest way is to consistently mow the bermuda grass low. Fescue really hates being mowed lower than a couple of inches but bermuda loves it. Fertilize every six weeks to stimulate a thick stand of bermuda. Imazaquin (Image for Nutsedge) is labeled for use to remove fescue from bermuda. Read and follow the label exactly.