Thomas from Youngstown,ohio writes
RoundUp QuickPro is only going to last 2 weeks in the soil. It is only meant to kill the weed it is applied to, so repeat appliations might be necessary. In order to prevent before the weeds emerge, you will want to look at applying a pre-emergent before germination. Depending on the weeds your are trying to treat, there are some pre-emergents you can apply in the fall, but most are applied in Feb/March before spring. We recommend contacting your Master Gardener for assistance on the best time of year to apply pre-emergents and post emergents in your county.
Answer last updated on: 07/30/2014
