Hi Mag123,

Flying Dragon is the best rootstock for dwarf citrus trees. It will produce a tree that is about 1/2 regular size with normal sized fruit. This is for a tree planted in the ground. If you are going to grow citrus in containers you may not need to purchase trees grafted onto Flying Dragon because your trees will have limited root volume and will naturally remain small.

For container soil use a mixture of 1/3 manufactured soil. For our climate I like Super Soil potting mix. Combine that with 1/3 peat moss and 1/3 pumice. If you can't find pumice use vermiculite. Don't worry about the pH. Trees planted in the ground are happy with a pH above 8. In a container yours will be much lower. If you want to reduce the pH of the water you use just add 1 tablespoon of vinegar in each gallon of water.

Good luck.

Here is a link that might be useful: Low Desert Citrus Varieties

Thank you for the very helpful information. Would like to know what flying dragon citrus varieties people are planting in Arizona.