Help identify these weeds

[gibby13]

I have centipede and put down my pre-m on Feb 25th. I had a couple weeds already coming up, but now they have exploded. What are these and how should I treat them?

Thanks!

[gibby13]

Couple more pictures

[killerv]

Pre-M apps this time of year only help with warm weather weeds. This looks like ryegrass, atleast the 2nd and bottom pic does. A fall application of Pre-m will help with this.

I wouldn't worry about it, once it starts warming up, it will die. There are fairly easy to pull by hand though. Atrazine has a limited affect on it, could also try Vantage but it can be hard to find. I use Vantage on my grassy weeds in my centipede.

Look like some young spurge in the top pic maybe.

[gibby13]

Thanks.

The one in the first picture is all over in my front yard and it is mostly under the centipede that is already turning green, so I think it would be hard to pull. We had a good week of 50+ degree soil temps but today it is down in the 30's for soil temps.

The larger clumps are almost 8" tall, I was going to pull them, but want to experiment to see if any chems will kill them.

I went ahead and ordered some celsius and MSM since I was out and plan on spot spraying with it.

[gibby13]

1 more note. I thought I didn't put down Pre-Em in the fall, but I just look at my spreadsheet and I put some down on 9/17/2017. However, I didn't write down what kind I used... ;(

[andy10917]

I'm no southern expert, but compare the first picture to photos of Chamberbitter and Mimosa varieties.

[TimmyG]

I'm no southern expert, but compare the first picture to photos of Chamberbitter and Mimosa varieties.

Nah, for that one I'd start with common vetch.

[gibby13]

So I spotted sprayed Celsius spiked with MSM on the 14th. I noticed about a half dozen different types of weeds all through the yard, much worse than I originally thought. Whatever is in the first picture is already starting to turn yellow and brown. Going to do a blanket app of Celsius spiked with MSM on the 28.

I wish I would have wrote down which pre-emergent I used back on 9/17. I would say it didn't do anything...

My neighbors on both sides have almost no weeds. The 1 waters and mows regularly and the other only mows like once a month.

Looking at what I put down last year, I am wondering if some weed seeds came in with the Milo apps.

[TimmyG]

Celsius is labeled to treat common vetch, at the low rate no less. So one down.

[andy10917]

Looking at what I put down last year, I am wondering if some weed seeds came in with the Milo apps.

Here's how Milorganite is made:

Milorganite is heat-dried in large-scale, bus-sized rotary dryers that operate at 900–1200°F.

Are you still thinking that the weeds came from a bag of Milorganite? I'm having a little trouble believing that, as a 140 degree compost pile kills weed seeds.

[gibby13]

Looking at what I put down last year, I am wondering if some weed seeds came in with the Milo apps.

Here's how Milorganite is made:

Milorganite is heat-dried in large-scale, bus-sized rotary dryers that operate at 900–1200°F.

Are you still thinking that the weeds came from a bag of Milorganite? I'm having a little trouble believing that, as a 140 degree compost pile kills weed seeds.

I was just spitting balling but neither of the neighbors on either side have these funky weeds. And I know they don't use any pre-em at all.

However between the celsius/msm and the freezing temps again the past 2 weeks, it seems to have taken care of most of the weeds. We are out of the freeze now and back in the 80's, so I applied a blanket app of celsius/msm yesterday to kill any of the stragglers, using my new YT25E sprayer, pretty pleased with the sprayer, wish it had dual shoulder straps though.

[gibby13]

Wow that second app of celsius with msm did the trick. All the weeds are nice and dead after 2 days.