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I think this is crabgrass. I have used Ortho weed and crabgrass killer to no avail. What can I do now . It’s spreading in my bermuda lawn. When do I put down pre emergent. Any other suggestions would be great Thanks


  • Absolute Green Landscaping Apprentice says:

    This does look like it is most likely crabgrass. The only way to know for sure is to look at the seeds just prior to cutting. Crabgrass seed heads are long and skinny unlike dallis grass seeds which are thicker. Crabgrass only lives for 1 season then it dies on its own when it gets cold. David is correct, Apply a pre-emergent in Feb and March to prevent it as long as you don’t plan to seed your lawn within the next year. Look at this page to compare the crabgrass seeds and the dallis grass seeds: Dallis grass does require different treatment.

    November 7th, 2015 at 7:18pm

  • David Unregistered says:

    If you have not put down pre-emergent herbicide by now in 2013(4/20) you will likely have a problem. Best to put down pre-em in mid February and again in mid March. Prodiamine works well in my experience to prevent crasbgrass.

    April 19th, 2013 at 5:35pm

  • Bobby Master Identifier says:

    This looks like crabgrass from here! Without late winter and spring preEmergents in your bermuda it’s a pretty safe bet that crabgrass will be a summer issue in Georgia. There is no date on when your photo was taken but by this time of year crabgrass has the potential of becoming a nice thick blanket. If that is the case at this point you probably want some relief for your bermuda. Mow on a five to seven day schedule to reduce the crabgrass canopy over the lawn. If you enjoy mowing more frequently, that’s even better! If your terrain will allow close mowing, one to one and a half inches or shorter will be good. Post emergent control of crabgrass is best achieved when the plants are small, one to two leaves. Beginning in August a quick fix just ain’t gonna happen. Because of the other actives in the product you are using you are limited on the amount of Quinclorac actually applied for postemergent crabgrass control. Try Drive XLR8 herbicide. You’ll need a crop oil concentrate mixed with it or, call a local lawncare operator in Gainesville. You’ll likely spend about the same amount or less to hire it done plus an added benefit is you won’t have to deal with excess product storage on the what was that stuff anyway shelf in your shed. Either way give it about six weeks. Give it eight weeks and an early frost in Gainesville could take care if it too!

    August 13th, 2012 at 7:11pm

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