I am located in south Florida. Have a customer who is in Mass. until winter and I maintain his lawn. It's an older St. Augustine/Bahia mix lawn and is typically getting sparse and scrubby looking after many years. He wants me to spread some seed to help fill in the lawn. I don't have any experience doing this. What would be a good type grass seed to use in south FL? I know the local home depot carries several types. Do I spread it with broadcast fertilizer spreader? He is just hoping for some new growth in sparse area's not looking to spend much money. He spread some Rye himself last winter and I don't like the way it fits in at all. Thanks for any and all replies, much appreciated.