My neighbor says I can spray Round-Up on my bermuda Grass to prevent weeds. Is he right?
It depends on the time of year and how closely you inspect the bermuda grass before spraying. Generally speaking, Bermuda grass is still somewhat greenish even in early December. January to early February usually has 2-3 nice days. Inspect the grass to be sure it is completely dormant (no green even down by the soil), and then read the label to find out the temperature range for applying it. If the temps are okay and the grass is dormant, OSU has found this to be effective at killing winter weeds in the lawn. Just remember, even the Oklahoma Gardening Studio Gardens (managed by OSU and aired on PBS) damaged their turf by not checking for dormancy one year. 2,4-D and dicamba (commonly found in WeedBGone) is also effective when sprayed in mid January to mid February. It won’t kill the bermuda grass. It will take about a month to show its effect on the weeds, but it won’t harm the perennial flowers and shrubs like it does in April.
