Bad grass in my lawn

Asked April 10, 2020, 1:19 PM EDT

I have several large brown circular patches in my lawn now and not sure what to do with them. I had a lawn service out here for a few years and these patches seem to have started with them and were small. Now these areas are quite large. The grass in these areas is still straw colored and it seems thick and entwined with itself. I've included a photo I took. These areas will green up later but never look like my normal grassy lawn. Can you help me identify what this is and how I should eradicate it? Can I just put good grass seed on top of it and hope it grows or do I need to dig these areas up? Thanks. Andrea Brosch

Hennepin County Minnesota

1 Response

I can't tell from your photos. Summertime photos would be best. Right now, it looks like simply some residual snow mold, which will go away as the grass greens up.

But if you are seeing patches of odd-colored and odd-textured grass, there are several possibilities. These include zoysia grass (used in the south, does not do well in spring and fall), tall fescue (coarse and clumpy), creeping bentgrass (used on golf courses), and weeds such as quackgrass. Here are some sites to help with identification and eradication:
https://web.extension.illinois.edu/lawntalk/weeds/perennial_grassy_weeds_in_lawns.cfm
https://apps.extension.umn.edu/garden/diagnose/weed/grass/tallfescue.html
https://apps.extension.umn.edu/garden/diagnose/weed/grass/creepingbentgrass.html
https://apps.extension.umn.edu/garden/diagnose/weed/grass/quackgrass.html