.

Also question is, is it crabgrass or something else?

Small (smooth) crabgrass--growing in concrete! Many think they have crabgrass, but they don't. Here are some other crabgrass look-alikes that are often called crabgrass, but misidentified Crabgrass is a warm season grass (and a summer annual), so it will die with the first frost.

Similarly, how do I get rid of quackgrass? Use a non-selective herbicide like Roundup to kill the patches. Keep in mind that non-selective means that it kills whatever plant it touches. This method will create dead patches in your lawn that can be re-established.

Similarly, you may ask, what kind of grass looks like crabgrass?

Quackgrass and crabgrass look somewhat alike, but they are very different. For one thing, quackgrass is a cool-season perennial (note its ability to grow in the high mountains) where crabgrass is a warm-season annual. They have different ways of spreading and the short-term solutions for eradication are different.

Can you pull quackgrass?

Pull the quackgrass out of the ground without damaging it. Quackgrass rhizomes are very hardy and often grow further than you expect. Any broken roots likely will sprout a new patch of quackgrass, so take your time. Pulling the plants up by hand is better than tilling since a rototiller may cut up the roots.