Eucalyptus deglupta is commonly known as the Rainbow Eucalyptus because of its unique way of shedding its bark. Once shed, the inner bark that is revealed is bright green, but eventually matures to blue, purple, orange, and eventually maroon. The rainbow eucalyptus does not shed its bark all at once, but in sections throughout the year, allowing for the amazing rainbow effect.
Thanks for the post idea Kris!!!!!!!!