Codonopsis convolvulacea subsp. grey-wilsonii


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One of the showiest in this genus of vining Bellflowers. Large purple-blue flowers with a dark ring - sometimes pure white - quickens our pulses in either expression. Recently reduced from species status, grey-wilsonii has been retained as a geographic race of the species convolvulacea based on larger leaves and flowers.


Plant Type

  • Vine
  • Perennial / Bulb

Mature Size


Hardiness Zones

  • Zone 6a (-10 °F)
  • Zone 6b (-5 °F)
  • Zone 7a (0 °F)
  • Zone 7b (5 °F)
  • Zone 8a (10 °F)
  • Zone 8b (15 °F)

Sun Exposure

  • Part Shade - Part Sun

Water Needs

  • Moist

Bloom Time

  • Summer