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I’m putting down fungicide tomorrow AM. Every year, end of June-beginning of July, my lawn develops a disease that leads to dead spots. In the early morning you can see spots that look like cobwebs. I was advised to use a fungicide and probably should apply it all summer long. Anyone know why some lawns always develop diseases like dollar spot, brown patch, and anthracnose? Should I top dress the lawn with new soil?
It can resolve itself if you are patient.
Most people are not and have an epic meltdown at the sight of just one brown spot.
Are you maybe over watering? Perhaps have a lawn professional evaluate it.
Another problem overlooked is grub worms eating the roots of the grass. You can spot them when a bunch of birds are in your yard on foot--eating the grubs.
You spray the yard with Diazanon about this time of the year to get rid of the worms.
No grubs, it’s a fungus. Looks like red thread and dollar spot. I water four times a week, 40 minutes at sunrise only. The lawn actually burned from the sun and heat this summer. I saw the little cobwebs that always form when the fungus kills the grass a couple weeks ago and dropped fungus killer to catch it. When I treat the lawn I have to keep pets and kids off. I treat as little as possible other than a pre-emergent in spring and regular fertilizer treatments about once every six weeks (not in the summer heat though). I also put down a grub treatment. The lawn suffers considerable damage. Happens every summer.
I’m going to hire a better, local service I think.
Another problem overlooked is grub worms eating the roots of the grass. You can spot them when a bunch of birds are in your yard on foot--eating the grubs.
You spray the yard with Diazanon about this time of the year to get rid of the worms.
Diazanon was banned by the EPA and has not been available for residential use since 2005.
Your county extension service will gladly advise you. Just email them and send photos of the problem.
In general, if you treat a lawn for grubs, and use a fungicide according to instructions as to frequency and amount, you should stave off this sort of thing. Measure your sprinkler. A lawn only needs 1-2” of water per week, depending on type. If yours is getting more, you could be encouraging fungus.
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