Centaurea scabiosa
Greater knapweed, Black top
Centaurea Centaurea
C. scabiosa - C. scabiosa has an upright habit with red-purple flowers heads and enlarged outer florets.
Centaurea scabiosa is: Deciduous
Clump-forming, Open branches, Spreading
Purple, Red in Summer
Green in Summer
Powdery mildew Powdery mildew
No pruning required
Seed
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Centaurea scabiosa (Greater knapweed) will reach a height of 1m and a spread of 0.5m after 2-5 years.
Bees (attract & feed bees), Low Maintenance, Wildflower, Wildlife
Sow seeds in thier final position in early autumn or early spring. Thin out seedlings to 25 apart. Prefers a well-drained, fertile soil in sun. Tolerant of dry, alkaline soils and established plants are tolerant of considerable neglect. Self-seeding and
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Well-drained
Acid, Alkaline, Neutral
Partial Shade, Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Centaurea scabiosa
Greater knapweed, Black top
Centaurea Centaurea
C. scabiosa - C. scabiosa has an upright habit with red-purple flowers heads and enlarged outer florets.
Deciduous
Clump-forming, Open branches, Spreading
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Purple, Red in Summer
Green in Summer
No pruning required
Seed
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Centaurea scabiosa (Greater knapweed) will reach a height of 1m and a spread of 0.5m after 2-5 years.
Bees (attract & feed bees), Low Maintenance, Wildflower, Wildlife
Sow seeds in thier final position in early autumn or early spring. Thin out seedlings to 25 apart. Prefers a well-drained, fertile soil in sun. Tolerant of dry, alkaline soils and established plants are tolerant of considerable neglect. Self-seeding and
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Moist but well-drained, Well-drained
Acid, Alkaline, Neutral
Partial Shade, Full Sun
North, South, East, West
Exposed, Sheltered
Hardy (H4)
Zone 10, Zone 9, Zone 8, Zone 7
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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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Centaurea scabiosa
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