A large species, native to the southeastern USA and northern Mexico that forms a robust trunk to about 1.5 m (5 ft.) tall and has a large crown of straplike, thorny, blue leaves. It demands a well drained, sunny site and is very hardy to drought and even severe freezes.
ゾーン 9a = 冬の最低気温 -7℃ ～ -4℃ (20F ～ 25F) 
