I have an orange tree that we purchased in Florida in 2006. Since then it has been up and down as to the health of the plant. This year as we did in previous years, we placed it outside in the spring. It about doubled in size and was a beautiful green. Recently we brought it inside because it was all turning yellow although frost has not hit yet. What is wrong with my plant?
There can be a few reasons for yellowing leaves, including watering issues or insects.
Repotting every 2 to 3 years is important and using a good citrus fertilizer.
Here is a link that will help you.