Closest I ever got was oranges... smuggled an orange back from a holiday in Morroco 3 years ago, found 5 pips, 4 germinated, 3 survived.... they sit in big pots on window sills, no special treatment, no special food! I did put a placcy bag over the pot that they germinated in, and they go mad everytime I repot, have to restrain them a little! ~ Largest is 3 foot high now, so space may become an issue. I've heard that drafts can cause leaf drop but not terminal and that leaves will come back, however my triffid oranges haven't read those books...possibly they only read Arabic?
Good luck! Sorry I can't be more helpful, :-\