Cosmos Anyone????

No, not the drink, noooo not the magazine.....I planted 2 cosmo plants very late in the season....after we got back from our 4th of July trip to the beach, and they have since seeded and died back quite a bit, I had bunches and bunches of green, non-flowering plant looking things growing and thought I would let them grow and just see what would come of them, well I thought they looked like cosmo's, but nah, I didn't plant any. While Gram was visiting I asked her what she thought, she too thought the green looked like cosmo's but we decided they were just "green" perennials from the seed mix I planted and they were pretty, but would not bloom....welllll I noticed a single bud on one of the huge 2 1/2 feet tall bushes....I showed Gram and she said yeah, maybe they will bloom, well a week after she has gone back to PA and does not get to enjoy the beauty with us - just look what the cosmos have decided to do.....how I do HOPE and PRAY they come back next year!!!! I absolutely love them!