It's probably worth a try in even colder areas. It should be planted in a moist sunny spot. It has landscape value both as an interesting specimen and as a mass. Year Round Mulch with well rotted wood chips. Winter Apply an extra mulch of oak leaves piled deep.
Spring Remove the extra mulch and any damaged growth.
Late Spring Feed with a balanced high organic content fertilizer. Unlike Rhapidophyllum hystrix, Sabal minor is a member of a genus with many species, including the Sabal palmetto, the most common palm tree in the southeastern states. But, Sabal minor is far hardier. It is another shrubby palm, with a range extending all the way from southeastern Oklahoma, across the Gulf States, and up into North Carolina. It occurs in rich soils in the understory of broadleaf forests.