seed planted orange tree
I have an orange tree I started from seed. It is about 4 feet tall and has never flowered. It is indoors all year round. It is about 4 years old. It is in a pot about 1 1/2 deep and 7" wide. What can we do to make it flower and produce fruit?
Unfortunately, if you do not know the specific orange, you may never see a flower or fruit. Many store bought oranges are pollinated with wild oranges, and will depend on the farm. Container grown oranges from seed can take 6 years or more to bear the first flower. Then another few to be able to produce a fruit. There are just too many factors to be able to tell right now. If you are growing one from seed, unless you know that it is a true to type variety, such as the blood orange, then you should not expect a fruit from the tree in its lifetime.
Here is an article for growing oranges in container: https://www.gardeningknowhow.com/edible/fruits/oranges/orange-tree-container-care.htm