General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
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 6b -20.6 °C (-5 °F) to -17.8 °C (0 °F)
Plant Height: 12 - 18 inches
Plant Spread: 12 - 18 inches
Leaves: Deciduous
Flowers: Showy
Flower Color: Blue
Bloom Size: Under 1"
Flower Time: Summer
Propagation: Other methods: Division
Containers: Suitable in 3 gallon or larger

Image
Common names
  • Speedwell
Also sold as:
  • Knallblau

Photo Gallery
Location: Alnwick garden, Northumberland UK
Date: 2009-06-14
Location: Alnwick garden, Northumberland UK
Date: 2009-06-24
Location: Alnwick garden, Northumberland UK
Date: 2009-06-14

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