Hydrangeas: Do I need a dormant period???, 0 by jamlover

jamlover wrote:
I took these 2 cuttings from a very young Tardiva Hygrandea around Sept. 1. Just purchased the plant and before setting it took 2 cuttings. I rooted them in sand and probably the first of Oct. potted them in potting soil. I don't have a greenhouse, just have them in a south facing window. As you can see, they are pretty small. No new leaves have formed___they are pretty much the same size as they were when potted up.
My question___can I keep it green and growing right through into spring, or does it need to shed it's leaves and go dormant in order to survive?