Posted: 01/02/2016 at 17:50
You can't really expect a clem to grow much, if at all, between autumn and late winter. It should though, if planted well, have been busy developing a root system to sustain it through the coming season.
Give yours a generous handful of specialist clematis feed or rose feed if you can't find that and fork it lightly in around the base of your plant. You can also encourage it with liquid feeds of tomato food for an instant tonic.
Clematis can take a year or two to settle in before they get going so be patient but then expect your Montana to take off. Train in new stems as horizontally or diagonally as possible on a decent support to encourage flowers. In future years, you can prune it to keep it in bounds as soon as flowering finishes. This will encourage new flowering stems to be produced for the following year.