Grassy weed poa triv or orchard grass?

Asked April 9, 2019, 9:18 PM EDT

Have never seen this come up in the lawn but this year I have some big spots of it in multiple locations. The purple hue on some of the stalks has me confused on what exactly it may be.

Baltimore County Maryland

1 Response

This appears to be Poa trivialis which is fast becoming a problematic grass weed. There is no selective herbicide to manage it and is even a challenge for golf course superintendents to control. Please see the following information from our website:
http://extension.umd.edu/hgic/topics/roughstalk-bluegrass

Deb