hyssop Agastache rugosa
Photo: Ernst Kucklich
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(Agastache rugosa)

The species has 2- to 4-inch-long flowers that are perfect for shorter borders. 'Honey Bee Blue' has spikes of blue over fragrant grayish-green foliage from mid- to late summer. Full sun. Up to 3 feet high, 2 feet wide. Zones 5 to 8.
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