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.Catlettsl said: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.
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).