Weed, ID Please

[Turk]

I put down Dimension during the forsythia bloom. Base of the triangle approach (Ortho WBG) and second layer (Ortho WBG CCO) have served me well (2nd application of Ortho WBG CCO yesterday).

One holdout is this small but persistent weed that last season owned much of my front yard before the fall renovation. Odd, it seems the base Ortho WBG killed some of it last month, but the rest has either survived or else reappeared elsewhere to replace its fallen bretheren (I'm imagining a whack-a-mole tactic). Can't use any more Ortho WBG, I'm at the annual limit.




I've also started seeing these things pop up around a section of the front yard: is this crabgrass or a sedge?




Thanks, Turk

[BIGDADDY13]

I had some of the top pic early last year and it died off when the heat of summer hit it. Only a little came back this year. Seeing my yard is huge, I can't actively put out every little fire (it also borders a cow pasture that has every known weed on it...). I do the best i can keeping the big issues at bay (mostly clover and crabgrass). I can live with most of the other stuff.

[bpgreen]

I think the first one is speedwell. It's easy to kill with 2,4d as long as the daily high temperatures are below 80 (85? It should say on thes label).

Trying to control it by hand pulling is futile.

[Turk]

Thanks, bpgreen.

Is there an alternative to 2.4D (I've reached the max annual limit of 2 apps/yr)?

[bpgreen]

Thanks, bpgreen.

Is there an alternative to 2.4D (I've reached the max annual limit of 2 apps/yr)?

I think there are alternatives, but I mostly quit using chemicals to kill weeds in favor of hand pulling (or weed hound pulling). But that didn't work with speedwell.

[Turk]

Right now I'm thinking of using quinclorac (Drive XLR8) from DoMyOwn.com - bonus that it controls crabgrass as well.

My guess is the second picture is nutsedge, so I'm thinking Sedgehammer (Halosulfuron) or Ortho's nutsedge killer

[Turk]

Could someone please help me identify the weed in the second picture of the original post (extra pics of the same weed below)? I tried hitting with one application of Halosulfuron but the application didn't do anything. (I applied Dimension in the spring, and Prodiamine on July 1).

Could it be Dallisgrass? If so, what can I do?

https://extension.umd.edu/resource/dallisgrass

[Turk]

Last question (I Promise!!!)

I don't think this is Asiatic Dayflower, it's starting to form a few pink blooms on the right of the picture (not blue).

https://extension.umd.edu/resource/asiatic-dayflower

[hazard209]

The grassy weed looks like dallisgrass to me. I had some in my lawn and I just nuked it with roundup. It was starting to spread and nothing I threw at it would kill it. The other weed looks like some kind of knotweed, maybe smartweed?

[Turk]

Thanks, Hazard, I'll try hitting both with Triclopyr 8% (Ortho CCO) every 2 weeks for about 2-3 times to see if that takes care of it (want to avoid RoundUp)