Centaurea montana (Perennial cornflower)
Other names: Mountain bluets, Knapweed, Mountain knapweed, Great blue-bottle, Mountain centaury
C. montana is a low-growing perennial cornflower with electric blue flowers with a red centre in summer.
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0.5m max. spread |
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0.6m max. height |
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1-2 years to maturity |
Centaurea montana 'Gold Bullion' (Perennial cornflower 'Gold Bullion')
Other names: Perennial bachelor's button 'Gold Bullion'
'Gold Bullion' is a low-growing, deciduous perennial with a spreading carpet of golden yellow foliage from spring to autumn, and blue flowers on upright stems in late spring until early summer.
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0.5m max. spread |
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0.6m max. height |
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1-2 years to maturity |
Centaurea montana 'Carina' (Perennial cornflower 'Carina')
Other names: Knapweed 'Carina', Mountain knapweed 'Carina'
'Carina' is a small, deciduous perennial with a broad, green rosette of foliage and tall, blue flowers in spring.
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0.5m max. spread |
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0.6m max. height |
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1-2 years to maturity |
Centaurea montana 'Blue' (Perennial cornflower 'Blue')
Other names: Knapweed 'Blue', Mountain bluet 'Blue', Bachelors button 'Blue'
'Blue' is a herbaceous perennial with a clump of green, lance shaped leaves and deep-blue flowers with a pink tinted centre in summer.
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0.5m max. spread |
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0.5m max. height |
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1-2 years to maturity |
Centaurea triumfettii subsp. stricta (Erect centaury)
Other names: Squarrose knapweed, Centaurea stricta
C. triumfettii subsp. stricta is a clump-forming, rhizomatous, deciduous perennial with woolly, narrowly lance-shaped, toothed, grey-green leaves and, in early summer, upright stems bearing blue flower heads with reddish-purple central florets.
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0.6m max. spread |
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0.3m max. height |
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2-5 years to maturity |
Centaurea 'Dwarf Blue Midget' (Midget Series) (Cornflower 'Dwarf Blue Midget')
Other names: Centaurea cyanus 'Dwarf Blue Midget' , Bachelor's buttons 'Dwarf Blue Midget'
'Dwarf Blue Midget' is a compact, upright annual with lance-shaped, sometimes pinnate, grey-green leaves and blue flower heads in late spring and throughout summer.
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0.3m max. spread |
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0.3m max. height |
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1-2 years to maturity |
Pulmonaria mollis (Hairy lungwort)
Other names: Mountain lungwort, Christmas cowslip, Pulmonaria montana subsp. mollis
P. mollis is a vigorous, clump-forming, rhizomatous, deciduous perennial with narrowly ovate, softly hairy, mid- to dark green leaves and, from late winter to mid-spring, funnel-shaped blue flowers, occasionally flushed-pink, aging to purple-blue.
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0.6m max. spread |
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0.45m max. height |
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2-5 years to maturity |
Aquilegia alpina (Alpine columbine)
Other names: Aquilegia montana, Mountain columbine, Alpine monk's head lily
A. alpina is a clump-forming perennial with finely divided blue-green leaves and bright blue nodding flowers in late spring and early summer.
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0.3m max. spread |
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0.6m max. height |
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2-5 years to maturity |
Iris missouriensis (Missouri flag)
Other names: Iris montana, Iris tolmeiana, Western blue flag, Rocky Mountain iris, Wild iris, Wild blue iris
I. missouriensis is a variable, spreading, rhizomatous, deciduous perennial with strap-shaped, erect to arching, dark blue-green leaves and, in summer, slender, branched stems bearing flowers with short, blue to lavender standards and paler falls with dark purple veins.
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0.3m max. spread |
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0.5m max. height |
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2-5 years to maturity |
Other names: Witches' bells, Ragged robin, Happy skies, Haw dods, Hurtsickle, French pink, Brushes, Bunk, Blue tops, Bluets, Blawort, Ragged sailor, Cornbottle, Corn centaury, Break-your-spectacles, Blue bow, Blue poppy, Blue bonnets, Blue bottle, Barbeau, Blaver, Centaurea cyanus true wild form
C. cyanus is an annual with lance-shaped, grey-green leaves and blue flowers that open from thistle-like buds in summer to early autumn.
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0.5m max. spread |
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1m max. height |
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1-2 years to maturity |
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