I've just bought a fairly mature clematis armandii (it's almost 2m high). I have a garden that gets around 6 hours sun in the summer (early morning to mid afternoon). I was thinking of planting it against a fence that would mean it was shaded all the time at the bottom (first 1.5m or so) but the top would be in sun (as the fence is part trellis). I think this is a good set up for most clematis but I'm concerned that it won't get enough sun considering it likes lots of sun and only the top would be in partial sun? By the way, I think I have a south-east facing garden if that helps.
I could plant it in another part of the garden potentially, but I'd like to plant by the fence ideally.