Orange (Citrus x sinensis) is a fruit tree belonging to the Citrus type (Rutaceae family), whose fruit is called orange. orange is a tall tree up to 12 meters long, with elongated, fleshy leaves and white flowers. The fruits are round and both the skin and the pulp are of the typical orange color. In summer it can be exposed to full sun, during the winter it must be repaired by direct frost. Recommended maximum resistance at site at repair: -9 °C.