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Centaurea montana 'Alba' (White perennial cornflower)
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1 hour care
per year
per year
0.5m
Max height
Max height
0.75m
Max spread
Max spread
1-2 years
To maturity
To maturity
Plant details
Botanical name
Centaurea montana 'Alba'
Other names
White perennial cornflower, Centaurea montana f. alba, Mountain cornflower 'Alba', Mountain knapweed 'Alba', Mountain bluet 'Alba'
Genus
Centaurea Centaurea
Variety or Cultivar
'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.
Centaurea montana 'Alba' is: Deciduous
Habit
Mat Forming
Flower
White in Spring; White in Summer
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Pests
Generally pest free
Powdery mildew Powdery mildew
General care
Pruning
Deadhead to prolong the flowering season.
Propagation methods
Division, Seed
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Where to grow
Centaurea montana 'Alba' (White perennial cornflower) will reach a height of 0.5m and a spread of 0.75m after 1-2 years.
Suggested uses
Coastal, Flower Arranging, Beds and borders, Containers, Wildflower, Wildlife
Cultivation
Grow in moist but well-drained soil in full sun or partial shade. May require staking.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
North, South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Centaurea montana 'Alba'
Other names
White perennial cornflower, Centaurea montana f. alba, Mountain cornflower 'Alba', Mountain knapweed 'Alba', Mountain bluet 'Alba'
Genus
Centaurea Centaurea
Variety or Cultivar
'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.
Foliage
Deciduous
Habit
Mat Forming
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Colour
Flower
White in Spring; White in Summer
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green in Autumn
How to care
Watch out for
Pests
Generally pest free
Specific diseases
General care
Pruning
Deadhead to prolong the flowering season.
Propagation methods
Division, Seed
Monthly care advice
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Where to grow
Centaurea montana 'Alba' (White perennial cornflower) will reach a height of 0.5m and a spread of 0.75m after 1-2 years.
Suggested uses
Coastal, Flower Arranging, Beds and borders, Containers, Wildflower, Wildlife
Cultivation
Grow in moist but well-drained soil in full sun or partial shade. May require staking.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moist but well-drained, Well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Partial Shade, Full Sun
Aspect
North, South, East, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
| Soil drainage: | Moist but well-drained, Well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Partial Shade, Full Sun | Tell us... |
| Aspect: | North, South, East, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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