The weed looks like wild violets / creeping charlie.
They laugh at regular Weed B Gone and are very invasive.

you need two things -
a. Ortho 'Dial A Sprayer'
b. Ortho Weed B Gone *CHICKWEED, CLOVER and OXALIS* killer.

That product has Triclopyr. Give it a blanket spray. Wait 10 to 14 days and do it again.

Also, when buying additional Weed B Gone, opt for the *MAX* with crab grass killer. This product contain Quinclorac and it superior to regular WBG.

As for the poa annua, we've discussed this and you know, it's a problem. Round Up.

Don't panic...that is good looking KBG you have there. In addition to the herbicide, start bag mowing up all those weeds! They've already flowered and you don't want any more weed seeds put down. If I were you, I'd make sure you have pre-emergence coverage for the entire year.

Thanks for the advice, all. Here is the crazy thing, I didn't have 1 single poa plant in the yard before the renovation. I'm wondering if the seeds were sitting dormant in the soil, waiting to pounce. I don't know if this is the usual way it happens, but is growing along side of structures. Along the side of the house, the fence, the flower beds and the shed. Anyway, I hit all the latest poa with round up today, I'll mow in a couple days and lll pick up the other type of wbg tomorrow. My plan, per another thread, is to grow galaxy kbg plug to fill the areas that are full of poa.

>"Gary, any thoughts as to how it came in so strong after a redo? "

jdruding holds the answer to that question, but I suspect disturbance of the soil when making the seedbed by either core aerating, using a dethatcher etc etc, or bringing in foreign soil or compost (*see picture) to level, top dress and etc.

>"I'm wondering if the seeds were sitting dormant in the soil, waiting to pounce."

Sounds like they were wind blown, since wherever you have a wind break, ie house, fence, shed, you are seeing weeds. How long they have been there, and where they came from, lord only knows. Poa annua seeds remain viable for many, many years. I am a huge proponent of NOT core aerating and advocate "let a sleeping dog lie" for this reason.

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* Now I have been told, that probably the bag was damaged and THEN a wind blown crab grass seed found this bag .... (in the middle of a concrete jungle of a big box store)

I disagree. I'll bet the seed was in this compost and germinated once the bag was damaged, receiving warmth, moisture and sunlight, just as it would when applied to ones lawn or garden.

Funny thing, read the instructions - it says to till in to a 6" depth. Yeah sure - till in MORE weed seeds and bring your existing ones to the surface. That sounds like fun!

{{gwi:36368}}

I have wild violets in my front and back (newly renovated) lawns. I've sprayed several times with a combination of triclopyr and dicamba (Monterey Garden's Spurge Power). They're still there, and the research I've done suggests that the violets are easiest to kill in the fall when they are going into winter. The suggestion is to use the above chemicals, but with a spreader/sticker adjuvant since the violets have a coating on their leaves which reduces absorption of the chemicals. The link below to Monterey has the Spurge Power and adjuvants.

I've got the poa as well, and am planning on using a pre-emergent in late fall to reduce the amount next year as my lawns get established. Until then, not much I can do.

Here is a link that might be useful: Monterey Garden

It's amazing what a couple days difference will make. On Saturday, I hit everything with Weed B Gone and Round Up (depending on what it was). Today, I went out and noticed the KBG is definitely starting to get an upper hand on the weakened weeds. I'll hit everything again in two weeks and we'll see how it goes. I'll post some pics again in a few weeks. Thanks all!

You have the following weeds on your lawn:

Henbit, chickweed, and Bittercress that's flowering right now. I can't see Poa Annua on the last picture, but it is very possible. Poa Annua is a miserable invader, but usually dies in the summer.

Advise from Gary and others for Wee-b-gone is sound. Henbit is difficult to control at the flowering stage, but not impossilble.

All those are winter weeds, which will die once summer sets in if you do nothing.

>" I've sprayed several times with a combination of triclopyr and dicamba (Monterey Garden's Spurge Power)They're still there,"

>>>>>

sibelius:

The violets remain because Spurge Power only contains 3% Triclopyr. (and they are laughing at the dicamba)

You need 8% Triclopyr, applied twice, at a 10 to 14 day interval.
Basically - you need to use a maul, not tack hammer.

re: your research - As Autech states, (hello Jav !) these are winter annuals. It's not that they easier to kill in fall, but rather BEST to kill a winter annual in fall, so it does not over winter and come to life the following spring.

I know this is an old thread, but Gary in Chicago - what contains 8% Triclopyr and doesn't kill the grass?

Deanna

Gary hasn't posted here in a long time.

He's recommending a product whose label states that it contains 8% Triclopyr.

In this case he recommended:

Ortho Weed B Gone *CHICKWEED, CLOVER and OXALIS* killer

but check the label, it may have changed ingredients.

It would be interesting to know what became of that guy's lawn.