Finally, be patient and persistent. Even with dedicated digging, it usually takes two years to eradicate a colony of quackgrass. Knowing what weeds are won't make them go away, but it might make the fight against them feel more honorable. Think of them as the bandages of the plant world. A world without weeds would be a wasteland, for no other natural force is as ever-present and ready to repair the damage done by floods, fires, earthquakes, and other natural disasters.
Weeds are rescuers, healers, and restorers of natural order.
While our forefathers and -mothers often looked forward to throwing a few early weeds into a spring salad after a long winter without greens, never eat any weed unless you're positive of its identification.