'Superba' spreads readily and is an excellent choice for the cottage cutting garden.
Commonly known as a Clustered Bellflower, 'Superba' can have up to 15 double flowers on each stem. It is easily grown in average, medium wet, well-drained soil in full sun to partial shade. If you experience hot summer climates its best to choose a partial shady spot and be sure to provide regular moisture. Deadheading will encourage additional bloom and clumps can be divided in fall every 3-5 years to maintain vigour and control spread.