When I was a child we had this neighbor that was always out working on their lawn. They were very concerned about dandelions being eliminated from their lawn. I was a bad girl and would blow the seeds into the yard of my neighbor. Year after year they were buying poisons that were designed to kill dandelions and year after year I would blow the seeds of the dandelions from our yard on to theirs.
As a child I was naturally drawn to the study of nature and had all the survival,outdoor, and first aid, badges associated with going to girl scouts.
I found thru my studies that dandelions are edible. They are actually very nutritious and even healing to the liver. In these tough times you might want to consider what is growing in your yard that is edible just to be on the safe side.