Ortho product with triclopyr and a surfactant. Violets will be no more, though it can take several applications, and you can't do it in the heat,

 

No pre-emergent will control wild violet.

Attached is for your reading enjoyment.

https://extension.tennessee.edu/publications/Documents/W807.pdf

 

Apply surfactant and Triclopyr while they are actively growing. The key is to hit them when they are vigorously growing, either spring or fall, but fall seams the most effective. Apply two rounds two weeks apart. Then repeat that for 5 years and you should have it 90% clear. I fought a war with them for nearly 10 years, and then thankfully we moved houses.

 

I laughed outload at the last part. But yea I agree. Those are nasty little things......

 

I have used (Store Bought) RoundUp for Lawns, Spectricide WeedStop Crabgrass Control, or (Professional/Specialty) Q4 Plus or T-Zone SE. These contain multiple pesticides that can kill Wild Violet and I find after 2 doses, 2 weeks apart, kills them. As mentioned before, the Active Ingredient you need is something with Triclopyr or Quinclorac. The standard 2-4,D (or MCPA/MCPP) and Dicamba also can help weaken/kill the plant. For best results, enhance applications with Methylated Seed Oil.

 

For best results, enhance applications with Methylated Seed Oil.

I have surfactant. Should I use the Seed Oil instead surfactant or mixed with it? Or is surfactant good enough?

 

MSO being an oil base will help the herbicide penetrate the waxy cuticle of the leave. It also is a surfactant. A surfactant just lowers the surface tension of the water and lets the herbicide spread over the leaf.

So MSO does 2 things, NIS does only 1.

 

Awesome. Thank you guys for the input on that. I will make sure to get that MSO moving forward with my spray herbicides.

 

I just carefully sprayed mine with Roundup and reseeded the spots after.

 

You can spend hours on your knees & manually pop their tuber from the soil. I just kneel down & get everything in my reach & move on. It took me 7 hours off & on. It's the quickest way. Faster & safer than herbicides. It was satisfying watching circles of violet free lawn appear in my wake.

 

Speedzone works well on mine

 

Tzone works great.

 

I must say that this year, the lawn looks really good and come in pretty thick. My violet issue that I have had for years is diminished a lot this year. They still popup a little here and there, but nothing like before.

 

2,4d+ Tricloypr ester combo would be closest to an instakill that you could use against wild violet and or creeping charlie.

I personally try to avoid 2,4d applications, so I'd use a Tenacity (normal rate)+Tricloypr (50% rate) combination for mitigation.

I apply 2,4d lightly once per 24 month period late Mayor in early June.

Tricloypr speed up the uptake of tenacity and reduces the whitening effect, so it's a popular mix. Tricloypr provides early knockdown and tenacity finishes off the weakened plant

You do need to be careful handling Tricloypr ester until it has dried, as it is quite hazardous in a wet or gaseous form.