Like the cobbler’s children who didn’t have any shoes, my own garden is often neglected while I work on other people’s plants. The vine in question was planted by a previous resident. It could probably do with more sun, but it seems happy here and I am reluctant to move it, having lost other clematis’ (clematii?) in sunnier spots that should have been more ideal.
The best time to prune clematis is around the same time you prune the roses: when the forsythia is blooming. (The one exception to this would be any clematis that blooms in the spring.)
As soon as you can see where healthy buds are, that is the time to prune, because the new buds are notoriously easy to knock off, if you wait until they start to send out shoots; nevertheless, that is when I finally got around to pruning this one.
A few years ago I put four eyelet screws in the fence and wove picture wire through in a sort of butterfly shape, so that the clematis would have something to grow up. Since the vine is still fairly small, pruning primarily consists of taking out the dead growth and ensuring the new growth is reaching the wires.
I think my favourite thing about this vine is that in late June it likes to peak through the fence to try and get the afternoon sun, and ends up creating a lovely semi-Zen minimalist look.