Paging Grass Gurus - What’s going on with my St. Aug?

Spray with fungus control and something like Talstar or Triazicide for bugs.

Hard to tell the difference in brown patch and bugs from pics, although the large amounts of green grass left in the middle of those pics make me lean towards bugs more. Fungus tends to wipe out the whole area.

Another poster here is having the same problem.

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Look to see if any blades have been eaten on. If so, armyworms / sod webworms.

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This is where to start. If you don’t see any grubs then spray for fungus control.

Chinch bugs will leave green spots in the middle.


OP, did you apply some sort of weed and feed?

Look at that upper edge by the sidewalk. Look like good green grass about like a row of sod laid.

Yeah the green grass that you see is fresh sod. We had new beds put in and new sod was laid around the outside. The brown patches showed up right after the new sod got laid. I think it may be bugs, I’ll get a picture tomorrow.

My lawn was great then started seeing exactly what your pics show. Put down Talstar and have gotten several rains and have been watering and it’s recovering. Started seeing the moths so I assumed sod web worms.

You’ve got something eating the blades and if it’s army worms they have not been there that long. You said it’s been a couple weeks and army worms would have erased your lawn by now.

You do have grey leaf spot and that is causing a lot of discoloration and lack of grown.

Head over to site one and get a bottle of Talstar or Wisdom and a bottle of propiconizole. You can mix them in the same backpack.

If you have something like chinch bugs, sod webworms, or army worms I would use liquid Talstar. That way they are dead on contact.

If you don’t have grey leaf spot and it’s been 30-45 days since you fertilized you can do that again.

My lawn was beautiful figured I would feed and seeds. OMG, burnt it, can I do anything to correct it.

I am having a similar issue with the St. Aug in my back yard. I initially thought it was fungus so I treated with a granular application. Although I saw some improvement, it wasnt much. I then noticed the chewed blades so I sprayed with Talstar 2 days ago. I noticed a ton of moths during that application, so I think I have a combination of a fungus and sodworms.

My question is, how often can I apply the Talstar and the fungicide? Should I do anything to help the grass grow in the places that had the damage?

Thanks for the help in advance!

I used the granular form of Scott's Fungus Control. I originally thought my issue was brown patch.