@gjones thank you. Was it you that said they liked these except when they flop over. I solved that problem with putting iris in front of them. The iris supports them. When I took out the iris to split them, the balloon plants flopped over.
@gjones they have a shorter variety now that is one foot tall. Also, I have some obedient plants that have inserted themselves in front of the balloon flowers. The obedient plants now support the balloon flowers. There is some pulling of obedient plants, but it is sort of dry there so they do not spread as bad as they could.