Answer: This tree is among the least cold tolerant of the cedars, rating hardy to USDA winter hardiness zone 6 at lows between zero and minus ten degrees. If you are on the edge of zone 5 and 6 then it would be a risk to plant it, especially if you are in a cold, windy, exposed location or even simply a colder microclimate. Your local county extension and/or experienced professional nurserymen might have some insight into the odds of it doing well in your particular location. I'm sorry I can't be more encouraging.
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