There was a large weed patch at one of my gardens (that I worked at). I asked the owner if she would like a cutting garden there and she admitted that she almost felt "cheated" that this area was full of weeds. It took me a year to get rid of the invasive gooseneck, but then I had a field day. Every year I would plant cosmos, cleome, snap dragons, and zinnias to my heart's content. One year I went crazy with sunflowers and the bees went crazy with them too! Unfortunately, that estate was sold and the new owner has her own plans. But wasn't I lucky to work there for so long with permission to do whatever I wanted.