WarrenF said:Buying Roundup in the regular strength, the mixing rate is usually 1 or 2 ounces per gallon of water. If you will mix 2-4-D with the roundup in its regular recommended rate you will find you get a better kill rate. Just a tip that is commonly used in our neck of the woods.
One thing I've noticed about roundup is that it is far more effective on grass than it is on weeds. I'd say less then 1 ounce per gallon will take care of grass. For many weeds, if I apply 2 ounces per gallon, I'll have to come back in a week or two and hit them again.