Rainbow Eucalyptus" Hana, Maui, Hawaii The unusual phenomenon is caused by patches of bark shedding at different times. The different colours are therefore indicators of the age of the bark: Freshly shed outer bark will reveal the bright green inner bark. This darkens over time and changes from blue to purple and then reaches orange and maroon tones.
The Rainbow Eucalyptus is the only Eucalyptus species found naturally in the Northern Hemisphere, and is found in New Britain, New Guinea, Ceram, Sulawesi and Mindanao. It's unique multi-hued bark is the most distinctive feature of the tree. Patches of outer bark are shed annually at different times, showing a bright green inner bark. This then darkens and matures to give blue, purple, orange and then maroon tones.
Rainbow Eucalyptus Trees, Maui, Hawaii, USA--There is a small forest of these trees off the Hana Highway. As the outer bark naturally sheds it leaves strips of green inner bark exposed and as it grows the inner bark turns bluish, orange, purple and maroon.
Rainbow Eucalyptus - Eucalyptus deglupta - The only species of eucalyptus found naturally in the Northern Hemisphere, spanning New Britain, New Guinea, Ceram, Sulawesi and Mindanao. Blue, purple, orange and maroon tones appear as the bright green inner bark ages after being exposed by patches of outer bark being shed annually