Butterfly Blue Larkspur

Butterfly Blue Larkspur is the named Delphinium grandiflorum cultivar ‘Butterfly Blue’, valued for rich-blue flowers on a compact, bushy plant. It flowers in summer, with the exact cultivar profile listing activity into late summer. ## Flowers and garden use Ball Seed identifies this selection as upright, with flowers rising about 16 inches and a garden width near 10 inches; it lists USDA zones 3a–8b and full sun. The broad flower spikes bring blue color to a sunny border, rock garden, or container, and the blooms attract hummingbirds. [Ball Seed cultivar profile](https://info.ballseed.com/PlantInfo/?phid=022100222000616) Plant in fertile soil that holds steady moisture while draining well. The [Royal Horticultural Society’s Delphinium grandiflorum profile](https://www.rhs.org.uk/plants/5399/delphinium-grandiflorum/details) recommends a sunny, sheltered position and provides general species guidance. This is a distinct selection from ‘Blue Mirror’; their shared species does not make the cultivars interchangeable. ## Maintenance Water during dry spells, especially in containers. Remove flower stems when the display fades and keep the planting free of standing water. Delphinium plant parts are harmful if eaten.