Q.how do I fertilize my orange trees
What type of fertilizer, how many times per year, and what distance away from the core of the tree should I put the fertilizer?

Certified GKH Gardening Expert
Orange trees require a balanced fertilizer, preferably slow-release. They are normally fertilized annually (once a year) in late spring. Here is some more information on fertilizing citrus trees: https://www.gardeningknowhow.com/edible/fruits/citrus/fertilizing-citrus-trees-best-practices-for-citrus-fertilizing.htm