Warm Winter Days and Weed Growth
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Collapse ▲On warm winter days, when the temperatures are above 55 degrees, the weeds in the lawn will be growing and getting ready to produce flowers. If they haven’t started flowering yet, then now would be a good time to treat them with an herbicide to prevent them from flowering. If we haven’t had rain in a week or more, water the lawn (weeds) the day before. All plants, even weeds, grow better when the soil is moist, and the weeds need to be actively growing for best control.
I’m often asked which product I recommend. I’ve used several of the lawn weed control products and they have all worked equally well for me. If you have a centipedegrass or St. Augustinegrass lawn, then I recommend using a product that is safe to use specifically on these lawns. Some products will say “Southern” or “for Centipede and St. Augustine Lawns” on the label. The biggest difference is the amount of 2,4-D in the product. 2,4-D is a chemical that may have a harmful effect on both of these grasses, if the concentration is too high. That being said, follow the label directions for how much to apply as too much will kill the weed, but may also damage the lawn.
For weeds with a waxy leaf like wild onion and pennywort, I recommend adding a spreader sticker to the mix to help the herbicide stick to the leaf where it will be absorbed into the plant.