Clematic Montana (And Yew)

I should think it weighs a bit!

 

Not enough to stop the wind tipping it and allowing a Rope kerb stone to get wedged underneath:dh: You can see the stone to the right of the seat and the outside right corner is now bolted to a 6ft scaffold pole driven into the ground

 

What months does it flower like that, what does it look like the rest of the year?

 

The montanas flower in spring. My Clematis.m. Warwickshire Rose looks dark green turning dark purple.