09-03-2010, 08:53 AM
All kinds of citrus are pretty slow growing but still produce good fruit and would do fine that close. As they get larger you can do more pruning but that can be many years from now especially if you buy dwarf trees. Bananas can be a fet feet apart and can form thickets but of course they aren't really trees. Papayas too can be a few feet apart and aren't really trees. I continue to be amazed how well things grow here no matter what you do. I have a Julie mango tree which is supposed to be a dwarf mango. It has other trees a few feet away and does great and I got maybe 15 mangoes thus year after 2 years in the ground and it's fruiting again. Supposed to only get 20' high.