I treated soil in pots with three way herbicide at one day intervals. I sowed grass seed so that the seed was planted from 1 to 7 days after the herbicide spray. Untreated Control included. Seed was fine fescue and secondly, tall fescue. Seed was sown on top of loose soil with no additional soil on top or other preparation. Planted 12-29-2019. This was indoors at 68 degrees F. Results--if any--in about two weeks. I am not sure if, I can compare mowing heights on new grass. I would have to use scissors. I do not have enough sunlight for good growth, indoors. Working on the idea.