Not all oranges are orange.In subtropical regions, like Brazil, where they grow some types of oranges, the temperature isn’t cold enough for the skin to turn orange. This means the orange could stay green or yellow, even when it’s ripe!
Origin of Orange
Oranges, and all citrus fruits, originated in the Southeast Himalayan foothills, in a region including the eastern area of Assam (India), northern Myanmar and western Yunnan (China). A fossil specimen from the late Miocene epoch (11.6 – 5.3 million years ago) from Lincang in Yunnan, China has traits that are characteristic of current major citrus groups, and provides evidence for the existence of a common Citrus ancestor within the Yunnan province approximately 8 million years ago.