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 | Heritage Perennial Profile |
Here's the complete description for this Heritage Perennial. Drop in any time to see the rest of our collection.
| Plant Number: 1.125.160 | USDA Zone: 4 - 9 |
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 | Centaurea nigra |
| Common name : Cornflower |
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| Also known as Hardhats or Spanish Buttons, for the round and very hard flower heads. This is a species of cornflower not often seen in gardens, forming a bushy clump of coarse green leaves. Upright stems of deep violet-purple flowers appear in summer, and these are useful for cutting. Trim plants back after blooming to prevent self seeding. A naturalized wildflower over much of North America, this does have potential to escape from cultivation, so site carefully.
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Conditions |
Appearance |
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Sun Exposure
Full Sun
Soil Type
Normal
Sandy
Clay
Soil pH
Neutral
Alkaline
Acid
Soil Moisture
Average
Dry
Moist
Care Level
Easy
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Flower Colour
Purple
Blooming Time
Early Summer
Mid Summer
Late Summer
Foliage Color
Deep Green
Plant Uses & Characteristics
Accent: Good Texture/Form
Border
Cut Flower
Deer Resistant
Rabbit Resistant
Flower Head Size
Small
Height
60-75 cm
23-29 inches
Spread
45-60 cm
18-23 inches
Foot Traffic
None
Growth Rate
Medium
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