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Delphinium

Botanical Name
Delphinium x elatum
Hardiness
Zones 3 to 7
Height
4 to 6 feet
Width
2 feet
Flowers
Early to mid summer: blue, white, purple, red, pink, yellow
Light
Full sun
Soil
Moist, well-drained
Planting & Care
  • Space plants 24 inches apart
  • Avoid wet feet in winter
  • Protect from wind
  • Deadhead for repeat bloom
  • Stake tall varieties
  • Divide annually for longevity
Problems
Crown rot, powdery mildew, mites, aphids, borer, leaf spot, botrytis blight
Varieties
  • New Millenium Hybrids - 4-6', sturdier stems and better winter survival
  • Mid Century Hybrids - stronger stems and less mildew (Ivory Towers, Moody Blues, Rosy Future, Ultra Violet)
  • Delphinium x belladonna - 3-4', highly branched, more flower stems and hardier

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