How to Fertilize milky bellflower?
Balanced perennial feed every four weeks from spring through summer

milky bellflower · Campanula lactiflora
Also known as: milk-white bellflower
Requires a fertile, moist but well-drained, neutral to alkaline soil in sun or partial shade. The delicate flower colour is best preserved in partial shade. The plants may require staking in exposed positions
Balanced perennial feed every four weeks from spring through summer