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 'Carnea' (Mountain cornflower 'Carnea')
Other names: Centaurea montana 'Rosea'
'Carnea' is a mound-forming, rhizomatous, herbaceous perennial with broadly lance-shaped, sometimes lobed and toothed, grey-green leaves, hairy beneath, and, from late spring into summer, pink flowers with tubular petals.
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0.6m 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 'Alba' (White perennial cornflower)
Other names: Centaurea montana f. alba, Mountain cornflower 'Alba', Mountain knapweed 'Alba', Mountain bluet 'Alba'
'Alba' is a rhizomatous, mat-forming perennial with ovate to lance-shaped, sometimes lobed and toothed, mid-green leaves and white flowerheads from late spring to midsummer.
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0.75m max. spread |
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0.5m max. height |
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1-2 years to maturity |
Centaurea montana 'Black Sprite' (Perennial cornflower 'Black Sprite')
Other names: Perennial bachelor's button 'Black Sprite'
'Black Sprite' is a rhizomatous, mound-forming perennial with ovate to lance-shaped, sometimes lobed and toothed, grey-green leaves and, from late spring into summer, purple-black flowerheads surrounded by long, slender, curled florets.
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0.6m max. spread |
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0.35m max. height |
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1-2 years to maturity |
Centaurea montana 'Parham' (Perennial cornflower 'Parham')
'Parham' is a mid-sized herbaceous perennial with grey-green leaves. In summer, it bears large, lavender flowers that have narrow petals giving a feathery appearance.
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0.5m max. spread |
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0.6m max. height |
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2-5 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 montana 'Amethyst Dream' (Mountain cornflower 'Amethyst Dream')
Other names: Mountain bluet 'Amethyst Dream', Perennial cornflower 'Amethyst Dream'
'Amethyst Dream' is a compact, mound-forming, rhizomatous, herbaceous perennial with broadly lance-shaped, sometimes lobed and toothed, grey-green leaves, hairy beneath, and, from late spring into summer, deep reddish-purple flowers with tubular petals and reddish-purple centres.
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0.7m max. spread |
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0.5m max. height |
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1-2 years to maturity |
Centaurea montana 'Purple Heart' (Mountain cornflower 'Purple Heart')
Other names: Mountain bluet 'Purple Heart', Perennial cornflower 'Purple Heart', Mountain knapweed 'Purple Heart'
'Purple Heart' is a mound-forming, rhizomatous, herbaceous perennial with broadly lance-shaped, sometimes lobed and toothed, grey-green leaves, hairy beneath, and, from late spring into summer, white flowers with tubular petals and prominent purple centres.
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0.7m max. spread |
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0.7m max. height |
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1-2 years to maturity |
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