Serbian bellflower Campanula poscharskyana 'Blue Waterfall' Photo/Illustration: Michelle Gervais 1 2 3 4 5 6 7 8 9 10 11 Serbian bellflower (Campanula poscharskyana 'Blue Waterfall') kam-PAN-yew-lah posh-ar-skee-AY-nah Genus: Campanula Serbian bellflowers have an easy, undemanding habit. Creating a stream of lavender blue, the 1-inch-diameter star-shaped blossoms bloom reliably from late spring to early fall. The foliage remains evergreen in mild winters and needs to be sheared only once in a while to keep its appearance tidy. 'Blue Waterfall' flows beautifully along bed edges and through rock gardens in full sun to partial shade. Noteworthy Characteristics: Long bloom period. Low maintenance. Good ground cover. Care: Grow in full sun to partial shade. Propagation: Divide in spring or fall. Sow seed in containers in a cold frame in spring. Take basal cuttings in spring. Problems: Prone to slugs, snails, vine weevils, spider mites, and aphids. Also susceptible to powdery mildew, rust, leaf spots, and Southern blight. Overview Height 6 in. to 12 in. Spread 1 ft. to 3 ft. Growth Habit Spreads Growth Pace Moderate Grower Light Full Sun to Part Shade Moisture Medium Moisture Maintenance Low Characteristics Showy Flowers Bloom Time Early Fall, Early Summer, Fall, Late Spring, Late Summer, Spring, Summer Flower Color Blue Uses Beds and Borders, Ground Covers Style Rock Garden Seasonal Interest Spring Interest Type Perennials Campanula poscharskyana 'Blue Waterfall'View the discussion thread.