Even though weeds have sprouted, will the pre-emergent prevent new weeds of the same variety from growing?
Yes, Resolute is effective anytime of year. Having said that the product only lasts so long in the soil and if applied too early it will not be effective to newly germinating seeds. If applied too late you could miss the window of the seed germination. We always recommend that you check with your master gardener at your local cooperative extension office who can tell you the best time to apply pre-emergents in your region so you are not wasting product and missing the window.
Answer last updated on: 04/01/2013