Mindanoan gum (or rainbow eucalyptus) found in the Philippines, where the bark is used as a traditional remedy against fatigue. Image by French photographer Cedric Pollet for his book "Bark: An Intimate Look at the World’s Trees." via Brain Pickings.
La couleur de ces arbres change tout le temps ! 19 photos d’une espèce extraordinaire !
Cold wise- I've had no problems with them in Central Florida zone Rainbow Eucalyptus - Eucalyptus deglupta for sale. With enough sunlight and water they do not have to compete, so stay shorter, less invasive roots