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This 6 – 8' tall and wide multi-stemmed deciduous shrub has narrow silver leaves and a fountain of cascading, fragrant, lavender flowers in spring on the previous season's growth. This one doesn't have to be cut back. It's always a butterfly, bee, and hummingbird draw. Place it just about anywhere it can get plenty of sun and it will tolerate just about any kind of soil that happens to be there. Easy and very rewarding — a garden spectacle!Minimum temperature: -20° F