Hello everyone! I've heard from many so many sources that Jubaea chilensis is the hardiest of all pinnate palms. Lately, I've been browsing Dave's Garden, and according to it Jubaea is hardy to zone 8b, while lesser known Phoenix theophrasti is hardy to 7b. There is 1 zone difference, too much for a statistical mistake. I created a quick summary Excel chart with the hardiness info of some popular cold-hardy palms from Dave's Garden web site. And I have two questions to our comminity now - how re