Prominens timber bamboo is very popular in Europe. Prominens is cold hardy, and has strong canes with prominant nodes. This picture was made after the severe winter of 2013-2014 which shows a little top burn of the leaves, but is otherwise unscathed! To those of you wondering, yes, this is the real prominens. I know the provenance , and obtained this clone from the only mature grove in the US of which I am aware.