Blue Mirror Delphinium is a freely branching perennial with deeply cut palmate green foliage and shorter stems that don't need staking. Its loose raceme of large, stunningly violet-blue flowers bloom from late spring all the way into early fall. Blooms best with afternoon shade in Southern climates and rich, moist, and slightly alkaline well-drained soil. Toxic if ingested.
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Type: |
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Height: |
1' - 2’ |
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Spread: |
1’ - 1.5’ |
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Spacing: |
2’ |
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USDA Hardiness Zone: |
3 - 8 |
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Culture: |
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Bloom Color: |
Blue |
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Season of Interest: |
MAINTENANCE NEEDS: Medium Maintenance. Water regularly. Deadhead to extend bloom. Susceptible to powdery mildew, blight, crown rot, and leaf spot. Slugs and snails can do considerable damage. Crown rot is inevitable if planted to deep or in poorly drained soils. Water at base and avoid wetting foliage to lessen chance of powdery mildew.
LANDSCAPE USES: Accents or Group Plantings, Borders, Woodland Garden, Rock Gardens, Foundational Plantings, and Containers.
COMPANION PLANTS: Phlox, Speedwell, Coneflower
IMAGES: Photoset by F. D. Richards, Delphinium grandiflorum, 2016 (1),(2)+(3), (2) Delphinium grandiflorum, 2015
*As plants have ranges in appearance they may not appear as the images shown.
