Invasive grass in gardens and yards
This looks like nutsedge. Take a look at our website for photos and more information. Look to see if stems are 3-sided and triangular in cross section. This is classified as a sedge and not a grass.
See control information above for lawns. This is not an easy weed to control. http://extension.umd.edu/hgic/yellow-nutsedge
In landscape beds, it is best to remove the entire plant (including the root/rhizome system) by digging around the plant’s base. This will help ensure that you will not get regrowth from the nutsedge’s underground rhizomes. A nonselective herbicide which contains glyphosate provides only marginal control.