Clematis North Star

North Star clematis flower

Clematis 'North Star' is a sturdy variety with violet-blue flowers complimented by a reddish-purple stripe/shading making them particularly attractive from June to September.

It is not often that a coal miner plants a Clematis garden, but that is exactly what Frank Watkinson did during his retirement from the mines at Askern on the Yorkshire coal field of Selby. He literally planted out a row of Clematis and gave them pea-sticks on which they prospered. He was enterprising and to his delight, a number of seedlings he raised were quite distinctive and among them 'North Star' is outstanding.

How to grow

This non-evergreen climber can be grown against a trellis, garden fence, wall, arches, pillars, pergolas, clambering over tree stumps and through large shrubs or planted in a container trained up bamboo canes or an obelisk.

North Star characteristics


  • Gardening skill: Suitable for beginners
  • Flowering duration: Long
  • Height after 10 years: 2.5m-3.5m / 8ft-12ft
  • Growth habit: Climbing
  • Spread after 10 years: Less than 1m / 3ft


  • Cold hardiness (RHS): H6 (to -20C)
  • Cold hardiness (USDA): (6) -10F / -23C


  • Country of origin: United Kingdom
  • Flower colour: Blue
  • Flowering month: June July August September
  • Flower form: Single flower (5-8 petals)
  • Leaf colour: Green
  • Leaf colour - young: Green
  • Leaf colour - autumn: Yellow
  • Annual cycle: Deciduous