MULTI-BUY 3 for $20. 1 litre sized pot. Campanula pyramidalis is a beautiful campanula that has a basal cluster of leaves from which emerge pyramidal spikes of purple/blue flowers in summer. It acts like a biennial so is best left to set seed. Tolerates full sun/part shade, reaching 1m +. Selecting this gives you 3 x 1 litre Campanula pyramidalis plants for $20.