it is closely related to peacock flower and to the tree many consider the world's most beautiful, the royal poinciana - and it shows! Orchid tree is staggeringly beautiful when in bloom - and it blooms for several months! Orchid tree grows 20-40 ft tall and 10-20 ft wide with a spreading crown of briefly deciduous leaves which are 4-6 in across and rounded with lobed ends and heart shaped bases