If you care for your miniature orange tree properly, you will have a healthy tree with little white flowers that will produce fruit with a slightly tart taste. This tree only grows to be about 3 feet tall, and can be grown indoors in any climate with proper care.
Keep the tree in an environment with temperatures between 20.0 and 26.6 degrees C. Humidity does not affect orange trees, although it may affect how much you have to water the tree.
Place the tree in a window with direct sunlight. The best window for a miniature orange tree is a south-facing window, but it will do well in an east or west-facing window as well.
Use a planter that has a drip tray. When you water the plant, make sure that water flows out into the drip tray. You will then know that the soil is soaked. Empty the water out of the drip tray and place it back under the planter. Trees that are in direct sunlight or a warm, mildly-humid house will need watering every two or three days.
Add fertiliser monthly during the growing season. Use the Miracle grow brand Miracid, which has a high acid balance. During the non-growing season, fertilise only once every three months.
When you see flowers, the fruit should follow.