Are these seed heads annual bluegrass?

Asked June 16, 2015, 8:46 PM EDT

I have a lot of seed heads in my lawn right now and am trying to determine if this is "annual bluegrass" (Poa annua) or something else. The seed heads are only about 5 to
6" high and appear to have a purple tone to them. Can you please identify this and tell me if it's friend or foe?

Washington County Minnesota bluegrass

1 Response

Unfortunately, your photo is too blurry for me to identify the grass. Even if it was clear, I might not be able to.

Bluegrass goes to seed about this time of year, so you could be looking at normal Kentucky bluegrass seed heads. Poa grass has a characteristically lighter color than normal bluegrass. This usually makes it easily identified in the lawn.

Read here about cool season grasses:
http://www.extension.umn.edu/garden/landscaping/maint/ts-selecting-cool-season.htm