Clematis in this group all bloom early.
The one that tolerates the most wind is Clematis montana, it also grows quite vigorously.
Clematis alpina and Clematis macropetala are fine plants with light foliage, small nodding flowers and seed pods after flowering.
Vitalba and tangutica are more wild, vigorous growing and forest-like.
They are all very hardy, grow well in sun, but can tolerate some shade.
