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St. Augustine grass half dead?

My husband and I live in Palm City, FL (south Florida), and have St. Augustine grass in our backyard. It's a year old, it was put in when we had our house built last year. We fertilize it as recommended and it is always nice and green. We just did our fertilizing 2 weeks ago, and the front half of our backyard is green, thick and beautiful but the back half is completely dead!!! Does anyone know why this is? Did we over-fertilize? Or not fertilize enough? We thought we spread it evenly...

Any help is appreciated on how we can get our grass fixed. :-) Thanks in advance!

I have attached a picture of our entire backyard. The dead grass is in the back (along with a closeup of the dead grass) and the healthy grass is in the front. It hasn't been cut in a while, so don't mind that it looks so uneven...


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Posts: 1335
Joined: Tue Mar 06, 2012 6:25 am
Location: ranches in sierra nevada mountains California & Navada high desert

Re: St. Augustine grass half dead?

Hi, St Augustine must have been a stubborn saint, if that grass was named after him. If the grass is completely dead, it would be more like too much fertilizer than not enough. Did you use Ammonium Sulfate? If that was applied without enough water it would burn. If you house was just built and they cleaned a cement mixer out there or a airless sprayer.

Some places St Augustine builds such a mat that get thicker and thicker, people have it taken out.

If the back part is being watered and doesn't began to come back, you may want to have the earth in that area tested.

Good luck with your new house and the return to health of you lawn.


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