(((Roxann))) I don't know about the St. Augustine fungus, but you might be better off waiting to see if the fungus is completely gone before planting anything else there. If the St. Augustine next to the fungus spot starts sending runners over that way, you're probably safe to replant.

I know what you mean about drying out already, and yet I still have standing, stagnant water in other places in my yard.

I finally got to mow too. With all the rain and having to go over to my dads every other day it can be hard to fit yard work in.
The low areas in my yard finally dried out, just in time for more rain but it looks like some plants are trying to go into shock? Other plants don't looked fazed by no rain for a few days.
Got my irises planted today too, as well as some plants put into pots. Now I just need sometime to do some weeding.
As for your grass, I'm having trouble getting the St. Aug grass to stay in one spot as well, dog's are one of my problems so I'm looking into doing the 12 by 12 stepping stones with stain or light paint. If I had the time I'd do a mosaic on them.
The stones will be placed are an angel to look like a diamond shade with up to three inches in between so it not solid stones. I've been trying to get something done about this problem for 3 years and I think I'm going to like this one. Wish me luck I'm going to need it.