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What is wrong with my lawn?

Posted on 9/17/24 at 4:09 pm
Posted by LSUDbrous90
Lafayette
Member since Dec 2011
1537 posts
Posted on 9/17/24 at 4:09 pm
Have gathered a bunch of information on this board to create a good pre/post emergent & fertilizing schedule year round that I keep up with for my St Augustine. The last two years I have had spots in my yard that simply just don't grow like the rest. The brown patch spots showed up in the last week (I treated today with a fungicide) but the spots with not long grass simply just won't grow compared to the rest of the lawn and they are very random so I don't think its a fertilizing issue. I did buy a scotts elite spreader recently to avoid streaks. Could the issue be that I need to aerate and/or dethatch? I am out of ideas.









This post was edited on 9/17/24 at 4:16 pm
Posted by oldskule
Down South
Member since Mar 2016
21540 posts
Posted on 9/17/24 at 6:52 pm to
My entire St Aug yard did that last year, and it ALL turned brown and I thought it died.....this spring it came back really strong and now it is totally covered in VBW....I am giving up.

Weeds are green, so what the hell.
Posted by MikeBRLA
Baton Rouge
Member since Jun 2005
16909 posts
Posted on 9/17/24 at 7:32 pm to
Looks like a fungus. In addition to the fungicide you are already using, I would apply peat moss to the affected areas as well.
Posted by LSUDbrous90
Lafayette
Member since Dec 2011
1537 posts
Posted on 9/17/24 at 7:41 pm to
I did fungicide and peat moss last year and this year the same thing if not worse. What is the peat moss supposed to do that the fungicide doesnt?
Posted by LEASTBAY
Member since Aug 2007
15680 posts
Posted on 9/17/24 at 7:47 pm to
Are they always in the same place? Might have rocks or something buried there. Start feeling around with a large screwdriver.
Posted by Local 53 tiger
Walker la
Member since May 2018
54 posts
Posted on 9/18/24 at 9:12 am to
I had same problem so I dug up the area it was full of grubs I picked out about 50 in a small area
Posted by LSUDbrous90
Lafayette
Member since Dec 2011
1537 posts
Posted on 9/18/24 at 9:25 am to
quote:

I had same problem so I dug up the area it was full of grubs I picked out about 50 in a small area


What did you do to treat the area after you figured out the grubs?

quote:

Are they always in the same place? Might have rocks or something buried there. Start feeling around with a large screwdriver.


Ive owned the house since 2019 and the areas with issues have been grass the whole time except for maybe a few spots where there used to be landscape beds. I'd say 80% of the area has been grass since I have owned the home.
Posted by Local 53 tiger
Walker la
Member since May 2018
54 posts
Posted on 9/18/24 at 10:27 am to
I haven’t treated the grubs yet . Still pondering it .Thinking about buying chickens lol
This post was edited on 9/18/24 at 10:30 am
Posted by ronk
Member since Jan 2015
6958 posts
Posted on 9/18/24 at 2:07 pm to
It does look a little like large patch. What fungicide did you use? I like propiconazole for that specific disease. Two treatments 21-28 days apart are recommended. I would also check for chinch bugs, grubs, army worms etc. Did you spot treat weeds? Some herbicides, especially Celsius, will stunt the growth. Lastly I'd check moisture. I don't mean it has been raining or my sprinkler system goes off twice a week. I mean actual moisture in the soil. If that area is clay it will not retain water like the rest of your lawn. If that is the case then top dress with compost.
Posted by LSUDbrous90
Lafayette
Member since Dec 2011
1537 posts
Posted on 9/18/24 at 9:01 pm to
quote:

It does look a little like large patch. What fungicide did you use? I like propiconazole for that specific disease. Two treatments 21-28 days apart are recommended. I would also check for chinch bugs, grubs, army worms etc. Did you spot treat weeds? Some herbicides, especially Celsius, will stunt the growth. Lastly I'd check moisture. I don't mean it has been raining or my sprinkler system goes off twice a week. I mean actual moisture in the soil. If that area is clay it will not retain water like the rest of your lawn. If that is the case then top dress with compost.


Woof a lot to digest there. I used disease ex and watered it in tonight so yes propiconazole. How do I effectively check for chinch, grubs, army? What about effectively checking for moisture? I use prodiamine 65 in feb/april/oct, winter weed cocktail to spot spray in colder weather and msm turf to spot spray in warmer. If the weeds are bad or it had been a while then i will do a full lawn spray instead of spot spray. Is peat moss and compost accomplishing the same thing?
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