A sunflower grew in or potato bed don't know were it came form, we didn't have the heart to pull it out,so we watered it and fed it with everything else!wow :o it grew to 14ft! the stem was 10in round and the head nearly 22ins across,sadly we had to take the seed head of last week, it was full of ripe seeds it was bending over so much with the weight we thought it would snap in two,the head is now propped up on the bird table not sure whats going to eat it?