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| Hardiness zone | 5 | | Maximum height | 50 cm / 20" | | Maximum width | 40 cm / 16" | | Exposure | Sun | | Plants attracting birds | No | | Fragrant plants | No | | Notes : Flowers are 10cm.(4") wide, begin as a powder blue in July and go through various darkening stages (pure dark blue, indigo, purple) until finally in September turning a deep violet. |
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