rob, have heard some pretty low temp claims for this species. looks like you have it situated perfectly. keep it dryish. bet it will be just fine. an older website, the yucca page contains range maps, that might help. good luck!
Y torreyi seems to be a hardy yucca if kept dry...need survival range however,, - Rob - near Cookeville, Tn December 29, 2011, 11:25 am
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