General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 7b -15 °C (5 °F) to -12.2 °C (10 °F)
Plant Height: 4 - 7 feet
Plant Spread: 15 - 36 inches
Leaves: Deciduous
Flowers: Showy
Flower Color: Blue
Bloom Size: 1"-2"
Flower Time: Summer
Uses: Cut Flower
Wildlife Attractant: Bees
Other Beneficial Insects
Propagation: Other methods: Other: Basal cuttings in Spring
Awards and Recognitions: RHS AGM

Image
Common names
  • Delphinium

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Location: The Alnwick Garden, Northumberland UK
Date: 2023-06-22

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