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| Hardiness zone | 5b | | Maximum height | 60 cm / 24" | | Maximum width | 60 cm / 24" | | Exposure | Sun | | Plants attracting birds | Yes | | Fragrant plants | No | | Notes : Pleasing yellow foliage and light blue flowers make this variety very popular in U.S. An attraction for gardeners and butterflies alike. Treat it like a butterfly bush and cut it back hard in early spring to improve flowering. |
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