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Weed Free Zone causing grey leaf spot?
Posted on 4/22/26 at 8:01 am
Posted on 4/22/26 at 8:01 am
Is it possible for weed free zone to some how cause grey leaf spot in my St. Augustine? Every where I spot sprayed it looks like grey leaf spot is coming in.
This post was edited on 4/22/26 at 8:14 am
2
Posted on 4/22/26 at 8:37 am to Peejack84
Does WFZ have dicamba in it? Whenever I spray Celsius it makes my st aug look like this for a month+ regardless of dosage.
Posted on 4/22/26 at 9:18 am to Loup
quote:
Does WFZ have dicamba in it?
It does. Label says .67%
Google says, WFZ can cause stress to the grass making it more susceptible to grey leaf spot.
I did another test spot a couple days ago and I already see it coming in.
Posted on 4/22/26 at 9:25 am to Loup
quote:
Does WFZ have dicamba in it?
A LOT less than Celsius. That’s for sure.
ETA: I think the only two herbicide products I’ve ever sprayed in my St Aug that doesn’t really stress it is Atrazine (by itself) and Recognition. I also spray Propiconazole about once every 4-6 weeks.
This post was edited on 4/22/26 at 9:37 am
Posted on 4/22/26 at 10:53 am to Peejack84
Anecdotally, the more I treat my St.Aug for weeds the more susceptible it becomes to fungal infections, in my case the brown/large patch variety. I'm about ready to start over with zoysia.
Posted on 4/22/26 at 1:45 pm to dragginass
or….dont spray anything at all.
Posted on 4/22/26 at 2:09 pm to cgrand
quote:
or….dont spray anything at all.
I probably won't do anything but pre-emergent if I re-sod. But I want something less disease prone. Bermuda is not an option.
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