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Centaurea ruthenica
at Digging Dog

Centaurea ruthenica

By C T Johansson (Own work) ‘CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)’, via Wikimedia Commons



Centaurea’s heritage extends all the way back to ancient Greek mythology when Achilles’s wise teacher, Chiron the Centaur was wounded by one of Hercules’ poisoned arrows and subsequently cured by this herb’s miraculous healing powers.

Equally at home in a present day border or a more naturalized setting, our hardy undemanding selections paint a bright picture inside as well. The long lasting boisterous blooms are celebrated cut flowers, bringing high-spirited accents to both fresh and dried arrangements.

Appreciative of well draining “sweet” soil, the ever amenable Knapweed withstands some drought, but not wet, wintertime feet.

Centaurea ruthenica full sun

“A border flower of the highest merit,” is how British horticulturist, William Robinson once described this awe-inspiring Centaurea, and we couldn’t agree more! Crowning long straight green stems, the fluffy thistle-style heads in unique pale citron yellows and tissue-thin buff-colored bracts will attract more than a few admirers. These ample-sized, sublime-for-cutting blooms heighten a graceful ferny pedestal of rich green pointed leaves with gray undersides, narrow silhouettes and a refined countenance. Appreciative of adequately draining soil, the ever amenable Knapweed withstands some drought, but not wet winter feet.

Blooms July–September.

Size: 3'–4' high x 2' wide; hardy to zone 5.

Centaurea ruthenica (P-1329)
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Other selections in this genus

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Digging Dog Nursery's borders recently featured in the new Garden Conservancy's book

We are proud to announce that we are among "50 of America's most beautiful gardens" in the Garden Conservancy's new book "Outstanding American Gardens"

Current Staff’s Favorite Plant

staff favorite plant

Our favorite plant this week: We love Tricyrtis 'Empress' for its unique, late blooming flowers. Renowned for its extra large and wider open flowers, this exquisite, newly introduced Toad Lily is a formosana hybrid. Ornate, spidery spaced petals are inscribed by occasional darkened tips and irregular velvet-rich deep purple spots, stipples and mottling on a creamy white background. An enticing fall beacon amongst the shadows, ‘Empress’s showy terminal blooms are supported by an upright robust gathering of lustrous, semi-clasping dark green foliage that stays dapper all season.

Tricyrtis 'Empress'

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