Hardy Palm and Subtropical Board
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Posted by George in Bandon Oregon on 6/24/2017, 12:51 am, in reply to "Re: More local pics...naturalized Alocasia..+ more"
Edited by George in Bandon Oregon on 6/24/2017, 12:59 am
...FWIW, "sunset western garden book" recommends jacaranda for it's zones 15-24 (Sac is in sunset 14). most likely while the plant would survive (come back from the roots) from the occasional dip to 25f or so but the concern seems to be that unless the plant is in a very favorable/protected microclimate it would neither be a reliable flowerer OR a reliable tree. that said, the "urban heat island" effect of downtown MIGHT help a plant get to the right size to do it's thing. FWIW, saw a rather large caryota/fishtail palm in the capital park a few years ago and it was certainly not recommended for zone 14 either so who knows IF the right plant in the right place might just surprise the "experts".
that such things can happen is "proven" by the existence of a rather nice "Norfolk island pine"/araucaria heterophylla---or maybe a. columnaris---about 10' tall growing nicely for a number of years near a Day's Inn motel in north Sacramento off Jibboom street!!!
the upper southern oregon coast
USDA zone 9a (Sunset zone 5)
DRY cool summers and WET cool winters
grow eucalyptus, banksias, telopeas, grevilleas, bottlebrush, mexican pines and oaks