Growing blood orange trees in containers allows one to easily move trees indoors or other sheltered area in cooler regions or during cold snaps. So what are blood oranges? Blood orange facts refer to it as a citrus fruit prized and cultivated for centuries for its juice, pulp and sweet rind used in culinary creations.
Lou 4 gwat 1, literally "black orange", originally referred to unripe kumquats, which are dark green, but due to a misunderstanding by poet Su Shi, Cantonese regions widely took up the new name for the non-citrus fruit known in Mandarin Chinese as a pipa.  Origin. The kumquat plant is native to south Asia and the Asia-Pacific region.
Mandarin Orange Tree Care. For mandarin orange tree care, water the little tree regularly, once or twice a week in drier climates. For container mandarins, water until the water runs through the drainage holes in the bottom of the pot. Keep in mind, the mandarin will tolerate drought over inundation.
Navel oranges are susceptible to pests such as the Asian leaf miner, but this pest will not kill the tree. Keep the soil around the navel orange tree moist while the tree is young. Do not allow 1- and 2-year-old navel orange trees to produce fruit. Pluck off any fruit that grows to allow the tree to focus on growing.
Satsuma mandarin citrus trees produce a mild, sweet-flavored mandarin with a thin, smooth rind and nearly seedless flesh. These trees are relatively small and make excellent container trees if you have limited space. Grown in a container, these trees will generally not reach more than 6 feet tall.
Also included among the sweet common orange varieties is an original citrus species, the mandarin. Amongst its many cultivars are: Satsuma; Tangerine; Clementine; Bitter orange varieties. Of the bitter oranges, there exists: Seville orange, C. aurantium, which is used as rootstock for the sweet orange tree and in the making of marmalade. Bergamot orange (C. bergamia Risso) is grown primarily in Italy for its peel, which in turn is used in perfumes and also to flavor Earl Grey tea.