A few years ago (about 8) I planted a climbing hydrangea against an old Pine tree. It has grown to about 20 feet in height and is a very nice vine BUT I have never seen a flower on it. I bought the vine as I understood it would take shade. The vine is in dappled sunlight . My yard is within a wooded area and I love the coolness of the yard in the summer months here. I have never cut this vine back as I am not aware if I should do so. I live in Zone 6A in Ontario and right on the shores of Lake Huron. We have prevailing North West winds in the winter but I am not concerned with regards to that as it is sheltered within the wooded area. Do you do anything special with this plant in the winter months and why haven't I seen any blossums. Thanks everyone in advance!