What is this and how do I get rid of it?

Asked August 30, 2018, 10:32 AM EDT

Hi! We have the pictured weed beginning to grow abundantly in our lawn. It is now going to seed. What is it, and how do we get rid of it? We appreciate any advice you can offer! We are attaching two photos.

Baltimore County Maryland lawns and turf weeds nutsedge

2 Responses

This looks like mature yellow nutsedge. https://extension.umd.edu/hgic/yellow-nutsedge
This is not an easy weed to control. If this is spotty throughout your lawn, you can use a selective herbicide mentioned in above link. You may need several applications. Follow label directions. If you need to overseed, see the label for timing.

If this is a solid area of nutsedge, you can spray with a non selective herbicide such as glyphosate. This kills everything. You may need several applications. Follow label directions for seeding. You can seed up until mid October.
See our website for lawn renovation and seeding http://extension.umd.edu/hgic/lawns/lawn-renovation

Monitor next season and control as needed when the nutsedge is immature.
mh

Thank you for your quick response!