Outsidepride Bellflower Campanula Carpatica Blue Plant Seed - 5000 Seeds Bellflower Blue grows as a perennial in USDA Zones: 3 - 8 and prefers full sun over partial shade. Campanula Carpatica is rhizomatous and grows to a height of 8 inches with sky blue blooms from summer to fall. These low-growing flowers are a wonderful ground cover for edging borders, rock gardens, or as a container plant. Sow these heirloom seeds at 3 - 4 seeds per plant or approximately 5000 seeds covers 100 square feet. Keep moist until germination occurs in 14 - 28 days. Our seeds are always Non-GMO and packaged for the current year.