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The “Black Knight” Butterfly Bush will add rich, purple color to your Summer Perennial garden year after year. Bonus, this is a great butterfly attracting plant! Almost care-free once established.
Prefers well-drained, fertile soil. Water deeply, regularly during first growing season to establish extensive root system; reduce frequency once established. Clip spent flowers to promote continued bloom. May die to the ground in colder zones, regrowing from the roots in spring. Elsewhere, prune in late fall or early spring. Feed in spring.Pruning time: fall after flowering