I am always confused by the terms quackgrass and crabgrass - same plant? I know I have a large clumpy grass that likes to infiltrate my garden beds. I've found that keeping it cut close to the ground eventually kills it. I can also pull it out slowly by grabbing 3-4 stalks at a time. Whatever it is has really long roots that grow sideways. I don't use or condone herbicides, so no help there.
