Posted: 21/07/2016 at 21:21
there are millions of weed seeds in the ground just waiting for the opportunity to germinate.
This is a common one in lawns (with the other species of plantain) it won't do any harm as long as you don't let it seed. Flower to seed to new plant in a weed is very a very short time. I don't really think it would do much to alter your soil