Posted: 28/03/2017 at 22:03
Fairygirl is correct, best to think of all the points that you are looking for in a clematis before purchasing. Flowering period, colour, aspect, height. For example a large flowered Summer flowering Red, about 8 ft high for a North facing wall, to be grown in a large container. So much easier than buying a plant on impulse then being unable to find a position for it in the garden, we have all done it.
There are thousands of different clematis cultivars and species available at present from 20 or 30 cms high up to 15 metres. Vast choice. I am a huge fan of the small flowered clematis, many are ideal for growing in pots. Some of the earlier flowering alpinas, macropetalas, koreanas ( atragene group ) can be grown together with a later flowering variety to make a good display over a long period, care has to be taken to label each plant as they have different pruning regimes, but it works OK.