What about grafting or rootstocks used for an indoor plant?
Q: I want to grow a citrus tree in a pot, indoors. Should I be concerned about grafting, or about which rootstock is used?
A: A citrus tree grown from a rooted cutting or air layer will probably be just fine in a pot. If the cutting came from a mature tree, it will bear fruit while still small. So thats a great improvement over growing from seed. But if you can get a grafted tree on Flying Dragon roots, it will be a strongly dwarfed tree, which will produce fruit of very high quality. Grafted trees on other root systems may be just fine in a pot, as well, but they wont have the extreme dwarfing characteristic of the Flying Dragon.