Lavender campanula (Campanula carpatica) is a herbaceous perennial plant that is commonly known as the bellflower. It generally grows from 1 to 6 inches tall and produces purplish-colored flowers that bloom in July through August. Lavender campanula is suitable for rock gardens, borders, woodland gardens or can even be grown in containers. It is hardy to U.S. Department of Agriculture plant hardiness zone 3.
Plant lavender campanula in the spring. Wait until you are sure all danger of frost has passed and the soil has warmed before you get started.
Select an area in your garden that receives full sun or is partially shaded and has well-drained soil. Lavender campanula prefers fertile moist soil, but does not like its roots to stay wet.
Sow the seeds in the desired area. Space seeds 12 to 18 inches apart and cover with 1/8 inch of soil, according to University of Maryland Extension.
Water the planted area thoroughly and maintain watering throughout the growing season. Lavender campanula can tolerate dry conditions, but to keep them happy, water once or a twice a week when the weather is dry.
Deadhead the flowers as they fade. Use garden shears or pinch with your fingers to remove faded blooms. This will encourage new flowers to grow. If dead flowers are not removed from the plant and seedpods appear, the plant will quit producing flowers.