after finding this photo on pinterest and pinning it i decided to give it a go and see it is works.
alas it does. i was thrilled and amazed. i never knew this was possible. my sister in law just celebrated her 30th birthday. after finding out if she frequently cooks with green onions i grabbed some and put them in a cutesyed up (sticky tape and brown twine) jar(spaghetti jar) of water. so it's not pretty flowers but these don't die and you just throw them away. it's useful people. :) she was thrilled with them and thought it was great.