Is this grassy weed Poa trivialis (aka Roughstalk bluegrass)?
Is the lime colored grassy weed shown in the attached photos Poa trivialis (Roughstalk bluegrass) as shown on your web page at https://extension.umd.edu/hgic/topics/weed-identification-photos? If yes, do you have any further advice to control this beyond what's shown on above web site? If no, what is it. This grassy lime colored weed first appeared in my tall turf-type fescue lawn about three years ago. Fig-1 shows a typical circular patch of this weed in my lawn. I've seen similar patches in several neighborhood lawns. The weed in my yard seems to out compete my fescue and recurs each year. I 've had very limited success digging it out. The weed is fast growing. Fig-2 shows the height difference two days after cutting the lawn. Any help getting rid of this weed would be gratefully appreciated. Sincerely, Patrick Martin
Montgomery County Maryland
You can also ask them questions, Email AskDep@MontgomeryCountyMD.gov or call 240-777-0311.