What causes St Augustine grass to turn brown in spots?

Answer 1

Large circular spots (usually larger then 6" in dia): Fungus.
Solution: use a lawn fungicidal spray. These patches may take some time to come back.

Small circular spots (usually 6" dia or smaller): Pet urine.
Solution: flood the area with water.

Erratic patches: Grubs or Fungus. An easy way to determine whether it is lawn grubs or not is to pull on the grass in the effected areas. If it comes up easily then it is most likely Grubs. If not, then you probably have a fungus. Fungi are often visible by the naked eye on the blades of grass showing up as little brown or black spots or white "flecking".
Solution: Grubs - use a good granular pesticide (make sure it targets grubs as some pesticides do not penetrate deep enough) directly after you mow your lawn and water in thoroughly. Fungus - see top.

Answer 2

A pet running around in the yard is probably the source. Also there could be destructive insects on the job.
For more information look up St Augustine grass and the maintenance of it on Google.

Answer 3

Use the runners to fill interior the holes. The runners have roots at each and each node, positioned the roots interior the floor. Tamp them down. confirm to maintain it watered. For some reason, this year St Aug seed isn't as stable as popular.

Answer 4

Have you been fertilizing the lawn? Too much fertilizer concentrated in one spot will cause the lawn to burn. So will dog urine (female, mostly) and feces. You may also have a type of fungus. check with a horticulturalist.

Answer 5

it requires lots of water...but also it has grubs that eat the roots....use some seven dust and water a bunch