[Pondboy]

So if I’m understanding the issue, you have perfect St Augustine Grass in your yard with the exception of some “Brown Spots” that only turn green after a rain.

How big are these brown spots? Are they round or different shapes?

I’m assuming that you have ruled out irrigation heads missing these areas and underground structures that are limiting the grass roots from reaching far down into the soil.

How about the suns reflection off of a window, hitting these spots and magnifying its intensity ?

Are you sure it’s St Augustine and not a weed such as crabgrass ?

How many inches of water does your system put down in these areas per week?

What does the grass look like before it turns brown? Do the leaf blades fold in or do they remain flat?