Virginia Buttonweed is killing me.....

Celsius or MSM Turf now, and when it cools to 85 F or less, Fertilome Weed-Free-Zone if you want. Use surfactant will all three herbicides. Anticipate 2 or more sprays at 3 to 4 week intervals. VBW is more difficult to kill when mature - learn to spot it when young and before white flowers form and you’ll have more success controlling it.

I’m loosing the battle. Got the stuff to kill it and am spraying. My yard is just yellow

It seems like in the past few weeks it went from minimal to out of control. It has overtaken my grass in a bunch of areas which seems to be on a decline. I did an MSM Turf treatment and just completed a bifinthrin treatment because I noticed a ton of sod worm moths when I did the MSM Turf.

Not sure if it was the increase in rain, the right time of the year...or what. It just spiraled out of control fast.

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Temperature restrictions on Celsius or MSM for St Aug grass?

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Safe at these temps but I’d suggest spraying in early morning and expect to have some temporary yellowing of St Augustine, particularly with MSM Turf, but it will recover provided you don’t exceed labeled application rates.

Same here. I was free and clear but just had some that showed up within last 10 days or so.

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Craw, I have a patch that's about 6'x4'. I think it choked out every bit of centipede that was growing in that area. Would it be best to just hit it with roundup and resod. If so, how long after round up can I safely lay sod. Thanks!

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Solid patch VBW - sure. Glyphosate (“roundup”) has no residual soil activity so you can put sod down after the VBW dies - 2/3 weeks. You want the glyphosate to translocate to underground rhizomes and kill them as well.

VBW can reproduce/spread four ways - aboveground stolons, underground rhizomes, and above and below ground seeds - it’s why it’s so difficult to eliminate completely. The area you re-sod may very well have some that comes back from seed - just look for it when it re-emerges in April/May (my experience in BR) and spray it with Weed-Free-Zone, MSM Turf or Celsius and as needed throughout the spring/summer/early fall.

I have no issue controlling it and it getting out of hand by locating it and spraying it when it’s is immature, before you see the white flowers. Just look at pics of immature VBW on the internet so you know what to look for, and take it from there.

ETA: Don’t spray Weed-Free-Zone when temps exceed 85 F

MSM turf has killed mine easily.

There needs to be a sticked thread titled Celsius. Buy Celsius. It kills that stuff.

I also have had lackluster results with MSM on VBW. It seems to work well on the other targets. Celsius has been incredibly effective on the VBW, on the other hand, and surprisingly good on dallisgrass, too.

The round killed that patch. It was actually 6x10. While removing the dead VBW, I noticed a ton of seeds on the soil. So now I have a 6x10
Patch of dirt with 1000s of VBW seed imbedded. No doubt I’ll have future growth VBW in that same spot. My question is, do I wait for the seeds to germinate then hit with roundup again. Or should i just resod as I originally intended and spray the new growth with Celsius.