Oranges are a little more difficult to cultivate thus far north. It's because our summers aren't hot enough for the tree to produce fruit. If you must have an orange tree, I would pick the myrtle leaf or trovita orange tree. Both of them are excellent potted examples for growing in West Virginia. Also consider the satsuma, which is grown primarily for its fruit.
You should be able to grow oranges in Florida too if your winters are warm enough. But only plant citrus trees when you can get good root stock because they're very expensive to ship long distances. You might want to look into dwarfing your tree so it fits in a smaller container.
The best time to plant citrus fruits is during springtime when all the plants and trees are young and small. In fact, most home garden centers will sell you bare-root trees that have been dug up from their roots in late winter/early spring. These trees will need some kind of general fertilizer and probably some water during their first year before they start producing fruit.
Citrus fruits are available year round but their flavor is generally at its best between January and March when the weather is coldest. Lemons and limes will always produce fruit, even if it's just one seed, while oranges usually have many seeds and so only grow in warmer climates. However, if you lose all of your oranges to green goblins then you can plant another tree!
Orange trees will flourish in some areas, notably in the valley's southern reaches, if planted in containers. As a result, if you do try to grow an orange tree Portland style in a pot, we recommend that you choose a kind that is tolerant to cooler temperatures. Our favorite is the Minneola, which is cold-tolerant and semi-dwarf in size.
You should be able only to grow oranges in zones 9 and 10, depending on how warm they get during the day. If it gets hotter than 85 degrees F during the day, then the tree won't bloom. Also, if it gets colder than 45 degrees F at night, the tree won't bloom. But if you can find a spot that falls between these two extremes, then your chance of success is good.
In fact, most oranges grown in the United States come from Florida, where the climate is similar to that of Oregon. The difference is that while Orlando has a zone 6 climate, most citrus is grown in zones 8 through 10, so this would not be an appropriate tree for growing in central Florida.
But even if you don't live in a zone that supports fruit growth, it's still possible to enjoy oranges. In fact, California grows more oranges than Florida does, and many of them are grown as commercial fruit instead of for juice or candy.
Orange trees (Citrus sinensis) flourish in subtropical temperatures such as USDA zones 9 through 11, or they may be grown inside where they can be protected from frost. Oranges need at least 6 hours of daily sunlight and average about 50 feet in height. They also require a lot of water during the growing season and will not tolerate drought conditions.
When you buy an orange you are actually buying part of an orange tree's harvest. The more fruit that is available to sell, the more profitable the harvest will be. Oranges sold in grocery stores usually come from Florida or California. They are picked fresh each day and shipped frozen to avoid spoiling.
Florida produces most of the world's sweet oranges. The state grows several varieties including Valencias, Navels, and Clementines. California grows many different types of oranges including Valencia, Murcott, and Marisa. There are also tangerines, grapefruits, lemons, and limes produced in California.
The taste of oranges varies depending on what part of the country they are grown in. Flaorida oranges tend to be sweeter and have more juice than those grown in California which are typically used for eating rather than juicing. Orange juice made from Florida oranges has a higher concentration of vitamin C than juice made from California oranges.