Clematis can be deciduous or evergreen shrubs or herbaceous perennials, mostly climbing by twining leaf-stalks, and often with showy flowers. Some have attractive fluffy seed-heads in autumn
Double-flowered Montana Group clematis are vigorous deciduous climbers with double or semi-double flowers opening in late spring and early summer
'Broughton Star' is a moderately vigorous, very large, deciduous climber with bronze-tinted young leaves turning dark green when mature. Double and semi-double deep pink flowers with prominent deep pink veining, to 6cm wide from late spring to early summer.