This one suffered severely over winter. It is kind of strange that trees form the high Rocky Mountains which have the most adverse kind of climate should not be totally hardy in my garden. Well, after all these years I found they are not. They seem to suffer from sunshine onto their frozen foliage. So I will have to protect them well from sunshine next winter. This one lost about 50 % of its foliage. But as one can see it will still be OK.