Poincianas that grow as street trees here in Queensland, Australia seem to exibit considerable color variation from a deep red to an orange peach color. I think it is just part of the normal color variation that can be expected from seed raised plants.

Hi
same is true here in s. florida.. I think they actually tend to vary from year to year . Not sure if there are named cultivars but there is another specie D. elata which has white flowers as well as a white form of Delonix regia. There's also a whole bunch of dwarf type poincianna which come in many different colors. I suspect they might hybridize?? gary

I've never known of hybridization of Delonix with Caesalpinia species, Gary.