Clematis Chalcedony

Chalcedony clematis

This beautiful Clematis has the most sumptuous, silver-blue, fully double flowers with yellow centres during May and then again in September. Clematis 'Chalcedony' blooms would be wonderful used within cut-flower arrangements, and could be used to decorate a wedding bouquet. This non-evergreen climber is a real show stopper and is perfect for growing in containers or trained onto a wall, fence or trellis.

Clematis 'Chalcedony' was raised by Ellis Strachen of Plymouth, England.

Chalcedony characteristics


  • Gardening skill: Beginner
  • Flowering duration: Long
  • Height after 10 years: 3m-5m / 10ft-16ft
  • Growth habit: Climbing
  • Spread after 10 years: 3m-4m / 10ft-13ft


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


  • Country of origin: United Kingdom
  • Flower colour: Blue
  • Flowering month: May September
  • Flower form: Double flower (25-50 petals)
  • Leaf colour: Green
  • Leaf colour - young: Green
  • Leaf colour - autumn: Yellow
  • Annual cycle: Deciduous