Twitch or Couch grass, also known as quackgrass, is actually not a type of grass at all. It’s a weed that can invade your lawn and affect the appearance of your landscaping. When not dealt with, couch grass can potentially spread very quickly. This means that when you notice it, you should take action and start getting rid of the couch grass as soon as you can.
Use a garden trowel to cut out and remove couch grass. Shallow removal is best because the reproductive parts of the couch grass are underground.
Use chemical control to get rid of the couch grass when all other methods fail. The herbicide you choose needs to have glyphosate in it to get rid of couch grass. Apply it every 48 hours to eliminate this weed.