Delphinium Summer Blues has soft, sky blue flowers that bloom from mid summer into the fall. Can be planted in groups or along borders.
Plant in well-drained soil. Likes full sun or part sun locations, although full sun will help to defend the plant against powdery mildew. Water regularly. Keep soil surface moist but not soggy. Fertilize once or twice a week. Remove faded or dead flowers to prolong blooming all the way into fall.