Hello again. I have a number of tropicals growing out in containers which are small enough to move inside when the weather threatens below 50f. (10c.). Being in a subtropical zone where the cold can dip to below 20f. three or four times a winter (-6 c.), I'm looking for some suggestions of rare fruit trees that might be able to survive cold snaps in this range in ground. Either deciduous trees or tough cold hardy evergreens.
I already have a lot of subtropicals like pineapple, pitaya, persimmons, citrus, etc. that are doing really well in ground and seem to thrive with no problems tolerating cold snaps. I'm looking for suggestions of something unusual that can stand the cold nights in the winter and not be overly damaged too bad.
Suggestions?