Crabgrass & Goosegrass post emergent

The best thing right now is to get a grandpa's weed puller and get after it. If you dont mind damaging the frick out of your centipede dismiss (sulfentrazone) kills it. There's a version of Image at home depot that has Sulfentrazone/quinclorac in it. It'll kill the goosegrass but it damaged my grass worse than the dismiss with just sulfentrazone.

Eta: this is the version of image that killed it. TSC link.

You are pretty limited. Sethoxydim post-emergent herbicide is recommended for post-emergent control of crabgrass and goosegrass in centipede lawns but it will kill the bermudagrass.

But honestly, if the crabgrass and goosegrass are mature, which I suspect they are at this time of the year, you are likely to have minimal efficacy using it, but you can try. Additionally in this heat, it’s going to be a major stress on the centipede. Being they are annual weeds, you just might want live with it now and focus on the fall & late winter pre-emergent applications that will be exceedingly effective on both crabgrass and goosegrass.

Remember, crabgrass seeds germinate at a soil temperature of 55 F (early-mid Feb application), goosegrass later, at a soil temperature of 70 F, so you might consider a late April-early May pre-emergent herbicide application as well. Dithopyr pre-emergent herbicide also has some post-emergent efficacy on very young crabgrass - consider using it.

You can use Celcius right now to hit both weeds without damaging either grass. You'll likely see some discoloration for a couple of weeks, but that's typical of Celcius.

Edit: Ignore that ^

I've always mistaken off the top of my head what Celcius has in it.

You're best bet in this situation is probably a well-timed pre-em split app in spring. I went Prodiamine then Dithiopyr this past spring and I like the results.

I agree with pulling. Especially the goose grass. If you were to kill it with herbicide it would take forever to break down into the soil anyways and you would probably end up pulling it.