Blue Mirror Larkspur

Blue Mirror Larkspur is Delphinium grandiflorum ‘Blue Mirror’, a compact perennial grown for electric-blue flowers and finely divided green foliage. Its flowering season can begin in late spring and continue through summer, with occasional later flowers where conditions suit it. ## Flowers and garden use The exact cultivar is listed for USDA zones 3–7 and full sun to part shade. Monrovia describes foliage about 12–18 inches tall and an eventual spread around 18 inches, with flower stems reaching roughly 24 inches; Ball’s plant profile gives a 20-inch height and 16-inch width. These published figures reflect different growing contexts. [Monrovia cultivar profile](https://www.monrovia.com/blue-mirror-delphinium.html) · [Ball Seed plant profile](https://info.ballseed.com/PlantInfo/?phid=022100001000693) Use it in a sunny or lightly shaded border, a container, or a small cutting garden. Keep the soil consistently moist without leaving roots waterlogged; fertile, free-draining soil supports sturdy growth. The blooms also attract hummingbirds. ## Maintenance Water in dry weather and deadhead after the main flush. Remove spent stems to tidy the plant and encourage later flowering, and protect taller stems from strong wind. Delphinium foliage and flowers should not be eaten.