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Full Sun - Zone 2-7 - 5 to 6' Tall - Blooms all summer. Growing 4 to 5 feet in a single season with their beautiful spirelike deep blue flowers, 'Black Knight' has been a favorite of perennial gardeners for years. The Pacific Giants series are massive yet gorgeous plants with semi to fully double flowers on spikes that are 17 to 28 inches long and make excellent cut flowers. These behemoths will need staking when they begin to display their heavy flower spikes.
$7.00
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