Wisteria are tough so if you really want to prune it now, I don't think it'll be a problem.
Alternative is to wait until it has flowered and then do the prune; that can also stimulate another flush of flowers, too.
Interesting, thanks! We had convinced ourselves of the opposite given our instructions were all about getting it right to get two blooms - might try a light prune now since it’s a bit late, then again late summer.
The flowering buds are very obvious, you can prune the buggery out of the rest of it multiple times in the year to keep it in shape.
@andyfallsoff started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Wisteria are tough so if you really want to prune it now, I don't think it'll be a problem.
Alternative is to wait until it has flowered and then do the prune; that can also stimulate another flush of flowers, too.