Posted by Tom Broome on 3/6/2008, 10:10 pm, in reply to "Cycad hardiness"
64.12.117.67
--Previous Message--
: Considering feedback you have had from
: adventuresome gardeners, would guess
: that any of the Dioons or
: Ceratozamias are as cold hardy as
: Cycas panzhihuaensis??
:
: Al Hirsh
: Silver Spring, MD 7a/b
: where panzis are perfectly hardy but
: usually deciduous (not this winter)
:
If you are calling it deciduous, then what you are asking is what species of cycads will survive at the same temps, but having all the leaves burnt off is alright. Fist off, any cycad with an underground stem might qualify. That includes all the pumila type zamias. One of the best ceratozamias would be hildae, which didn't even get leaf damage at 12F in Austin. For something with an above ground stem, you should try a cold hardy for of Dioon edule, it will be the most cold hardy dioon.
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