anyone have any experience with these trees? there's so much conflicting information about there about the hardiness of these trees and susceptibility to disease. i'm looking for a tree that is interesting year round in hardiness zone 10a, climate zone 24. does anyone have pictures of what they look like in winter? do they go completely bare? problems with messy fruit/flowers/sap falling? can they withstand the heat here? i'm in pasadena. help!