Balloon Flowers are summer-flowering cousins to the more familiar Bellflowers. Plants form a mound of green foliage, bearing inflated buds that open into star-shaped blue blossoms. This dwarf selection is great for edging the border, rock gardens or in mixed containers. Nice for cutting. Because they come up very late in the spring, consider planting tulips or daffodils beside the clump to mark the location. To -40F. Space 18". Blooms early to late summer.
Division is seldom necessary, and not always very successful because of the carrot-like root. Water weekly during dry spells.