It's hard to tell with so few leaves on it right now. The few that are there kind of reminds me of Nokomis. The problem with canes (and rhizomatous too) is there are so many that look eerily similar.

As for age, it could be 3 years old or older. Any evidence of stumps? Often it is best to start them all over again. Some people cut theirs to the ground every year. I tend to let them be for a few years but I will show you how fast they respond in a series of photos at the bottom of this reply.

Here are what the blooms of my Nokomis look like

This is what it should look like in full sun (July 2015)

This photo was early April 2017.