Now that the summer heat is really hitting, I am getting many of you asking about grassy weeds in the lawn, specifically, crab grass. Crab grass is an annual grassy weed that starts to germinate when soil temps hit around 55 degrees. That usually happens in later spring.
However, you, the homeowner, don’t actually see the crab grass until it breaks ground in mid to later June. At this point, it is pretty much too late to control this bright green spreading weed.
So What Can We Do About Crab Grass?
If you do have crab grass in your lawn and want to get rid of it, the best thing to do is dig it out. I know that sounds harsh, but that is the best bet you have.
Many of you will want to try and spot spray the grab grass with a complete herbicide such as Roundup, and while this will work for sure, it will also surely damage some of your good, healthy turf.
What I do recommend, however, is that you identify the areas that are getting crab grass and heavily seed them with good, fresh bluegrass. You can do that now if you want, just make sure you water consistently all summer. If you do well with the seeding of the good grass, you will effectively “choke out” the crab grass over time.
Then, I highly recommend you apply a crab grass pre-emergent next year in the early spring!