12-30 inches tall, space 12-16" on center, spreads by rhizoms
Maintenance
After bloom cut the foliage back to the basal leaves. The plant will respond with a new flush of foliage. Can be aggressive in good sites. Divide to maintain vigor.
Propagation
seeds, cuttings
Native Site
species native to Europe
Cultivar Origin
Joan Elliott was named after Joe Elliott's wife. Joe (1915-1998), founder of Broadwell Nursery in the Cotswolds, UK.
Misc Facts
Common name for this species is Clustered Bellflower or Danes Blood Bellflower.
Author's Notes
I have found that the C. glomerata plants tend to sprawl. Plant in groups of 3-5 and they will support each other.
Notes & Reference
4-Herbaceous Perennial plants,#40-Manual of Herbaceous Ornamental Plants, #54-The Well Tended Perennial Garden), #123-Dwarf Campanula (Graham Nicholls), #209-Campanulas A Gardeners Guide (Peter Lewis and Margaret Lynch), #209-Campanulas A Gardeners Guide (Peter Lewis and Margaret Lynch)