The ancient Japanese art of Bonsai creates a miniature version of a fully grown tree through careful potting, pruning and training. Even if youre not zen enough to labour over your own Bonsai,. - Gardening Worlds
Adenium Bonsai - here a white flowering. I think it's important that the tree be allowed to gain enough size to reasonably match the flower size. To me they look silly to have a tiny plant with /huge/ flowers but that can't be helped when they are young.