Low maintenance and easy to grow, Campanulas prefer soil that is moisture retentive but free draining – they do not like to sit in the wet all winter. They are pretty drought resistant but are happiest with a regular supply of water during dry summers with a feed in Spring and ideally again in mid-Summer. These versatile plants will deliver the most blooms If planted in full sun, but they will still perform well in partial shade. Whilst some varieties are considered evergreen, most will die back to ground level in Winter when you can trim off any straggly dead foliage ready for the following Spring.
As a rough guide when planting Campanula as ground cover – 4 plants per square metre is adequate with a little patience, 6 will give better coverage, and 9-12 will make a weed supressing carpet very quickly.
How to grow Campanula (Bellflower)
Position: Full Sun/partial shade
Foliage: Perennial, leaves appear from Spring with flowers following in early Summer through to mid-late Autumn
Soil and site: Fertile, well drained
Flowering time: Early Spring to late Autumn
Growth rate: Moderate
Ultimate height and spread: from 20cm to 200cm depending on variety, with an average spread up to 100cm
Aftercare: Water well until established, avoiding soil becoming waterlogged. Trim off any dead/straggly areas after flowering has finished