[Catlettsl]

Couple of questions...

I'm in the Wash/DC area. Lawn has woken up and greening nicely. Temps have been hovering around 60 degrees with a few high 70-75 days for the last 2 weeks. I put Pre-M down in March (about 3 weeks before we saw consistent 50-55 degree days and forsythia blooming). Haven't seen any crab grass in the yard but it's probably a little early for it here. I have seen a lot of grassy weeds in the yard. My neighbor has a lot of weeds that push into my yard.

Should I use Round Up for weeds not Lawns or Ortho CCO?

If I go Ortho can I blanket spray with the hose in version or should I spot spray?

Also I see a lot of youtubers using commercial grade products. If Ortho works why use the commercial grade. Based upon labeling Ortho will zap 200+ weeds. Commercial grade seems to be very specific to certain weeds and therefore needs multiple types of commercial grade products. Hope I'm being clear in my question and thinking.

Thanks

 

[Jgolf67]

I'm not familiar with the ortho product you reference but most herbicide labels indicate various methods allowed for application such as broadcast, spot spray, and hose end. You can use any method listed at the rates listed.

To answer your last question: Big box store products are formulated typically with the understanding that joe shmo homeowner wants kill some weeds and "we" (herbicide company) don't want him to kill his own lawn. Thus they put in a variety of chemicals at low rates that all attack the same weeds with a different mode of action. This will help kill the weed in multiple ways without overwhelming your grass. The pro grade products that have single active ingredients usually allow a range of dosage rates that can knock out weeds with fewer applications but it's much easier to harm the grass if you don't know what you're doing. The big box store products can work just fine but will most likely require more applications to effectively control the same weeds. Also the ortho products claim to 200 weeds = marketing, Hope this helps.

 

[g-man]

What weed you need to remove? Round is always the last product to use since it kills your lawn.

 

[Catlettsl]

What weed you need to remove? Round is always the last product to use since it kills your lawn.

"Round up Weeds not Lawns" is selective

 

[g-man]

It used to be Round up for Lawns. It is a 4 way very similar to WBG.

WBG CCO is triclopyr and it is sold in other brands names. There is no big difference between the big box stores and other products other than the concentrations they are sold at to be mixed with water. The reason some folks buy a commercial product is economics. It is cheaper to buy a higher concentration product and mix it with water, but for you 10k lawn, the big box stuff will work fine.

I bought a concentrated bottle of a 3way product for $9 dollars. It will last me ~7years, so it will go bad before I could finish it. That's $1.30/yr.

I do not recommend applying anything that could kill your lawn with a hose end sprayer (even if it sold like that).

I will start with a 3-4way product first and then move to the CCO for what is not dead, per the Cool Season Guideline

 

[ericgautier]

Start with "Round up Weeds not Lawns" , then whatever is left (2-3 week after)... use CCO.

 

[rockinmylawn]

Couple of questions...

I'm in the Wash/DC area. Lawn has woken up and greening nicely. Temps have been hovering around 60 degrees with a few high 70-75 days for the last 2 weeks. I put Pre-M down in March (about 3 weeks before we saw consistent 50-55 degree days and forsythia blooming). Haven't seen any crab grass in the yard but it's probably a little early for it here. I have seen a lot of grassy weeds in the yard. My neighbor has a lot of weeds that push into my yard.

Should I use Round Up for weeds not Lawns or Ortho CCO?

If I go Ortho can I blanket spray with the hose in version or should I spot spray?

Also I see a lot of youtubers using commercial grade products. If Ortho works why use the commercial grade. Based upon labeling Ortho will zap 200+ weeds. Commercial grade seems to be very specific to certain weeds and therefore needs multiple types of commercial grade products. Hope I'm being clear in my question and thinking.

Thanks

Without knowing what weeds you are trying to eliminate post-emergent wise: you'll have to read the label of either the Roundup for Lawn label or the WBG CCO label.

The latter is primarily used to treat Clover Chickweed & Oxalis & also Kills Creeping Charlie (Ground Ivy) & Wild Violet. @ 1 oz for 200sf.
The former appears to be used for more weeds based on its active ingredients: Quinclorac, Dicamba, Sulfentrazone
So if you have the infestation localized then you obviously don't need to blanket spray.
Again read the label & see what the primary active ingredients are (Quinclorac, Dicamba, Sulfentrazone or Triclopyr) & if it is effective vs. the weed you have id.
A good resource is this: https://www.turffiles.ncsu.edu/weeds-in-turf/

There is no magical 1 knife kills all weeds for everyone unless you kill the lawn also like Roundup (glyphosate).