The citrange tree is a hybrid tree species created by crossing the sweet orange tree and the trifoliate orange tree. Some synonyms for the citrange tree include orange x trifoliate hybrid, citrumelo, or hardy orange. The citrange tree is known for its tolerance to cold weather conditions and its ability to produce fruits with a unique flavor that is a blend of sweet and sour tastes. This hybrid tree is a popular choice for citrus growers in areas with cold winters like as far north as Virginia. Whether you call it a citrange tree, citrumelo, or hardy orange, this fruiting tree is a delicious addition to any backyard orchard.