How to Prune Campanula glomerata 'Purple Pixie'?
Cut back after flowering to promote extended flowering

Campanula glomerata 'Purple Pixie' · Campanula glomerata 'Purple Pixie'
Will grow well in fertile, neutral to alkaline soil that is moist but well-drained, in full sun or partial shade avoiding wet conditions in winter. A semi-shade position will ensure the best flower colour is preserved.
Cut back after flowering to promote extended flowering