Campanula portenschlagiana Clockwise Deep Blue
Campanula 'Clockwise Deep Blue' photo courtesy of Syngenta Flowers


Campanula 'Clockwise Deep Blue' is a compact, mound-shaped evergreen perennial with heart-shaped, toothed, green leaves. It produces masses of  funnel-shaped, violet-blue flowers over a long period in mid summer.

  • Size: quart
  • Height: 20-30 cm (8-12 in)
  • Spread: 20-25 cm (8-10 in)
  • Cold Hardiness: Zone 3-8
  • Sun or Shade: sun to part shade (minimum 4 hrs of direct sun)
  • Bloom Time: summer
  • Leaf Colour: green
  • Bloom Colour: dark blue
  • Nature Attraction: bees

Growing and Maintenance Tips

Campanula 'Clockwise Deep Blue' is a robust rock garden species that will thrive in sunny, well drained locations. It prefers to have its roots cool so a mulch is helpful. Good drainage is essential for success with this plant. Very wet or extremely dry soils will kill it. Divide it every three to four years if the plant becomes straggly looking. Dead heading or shearing back the plant after flowering will encourage rebloom.