Papaya at the 2011 Philadelphia Flower Show
One awesome tree at the 2011 Philadelphia Flower Show showed off three large papayas. I like that somewhere in Pennsylvania (or thereabouts) manages to grow tropical fruit despite the deep cold that descends here in December and leaves in March. When I settled here, hardiness zone maps showed us in zone 5b. The latest maps show us in zone 7a. I keep joking that I'll be able to grow pineapples outdoors by 2030... but I guess that isn't really funny, is it?