Mountain Cornflower, Perennial Cornflower, Mountain Bluets, Knapweed, Mountain Knapweed, Bachelor's Button, Great Blue-Bottle
Prized for its flamboyant, rich blue flowers, Centaurea montana (Mountain Cornflower) is an erect, stoloniferous, clump-forming perennial with fringed, blue flowers, 2 in. wide (5 cm), adorned with reddish blue, thistle-like centers from late spring to early summer. Attracting bees, butterflies, and other admirers, the thistle-like blossoms may bloom again in late summer-early fall. The flowers appear atop unbranched stems above the foliage of soft, gray-green, lance-shaped leaves. Native to Europe, this rhizomatous perennial will self-seed prolifically if not deadheaded and may spread fairly quickly to form colonies in satisfactory growing conditions.
| Hardiness |
3 - 8 |
|---|---|
| Heat Zones |
1 - 9 |
| Climate Zones | 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Centaurea |
| Common names | Bachelor's Button, Cornflower, Knapweed, Mountain Cornflower |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Late), Summer (Early) |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 1' - 2' (30cm - 60cm) |
| Spacing | 15" - 18" (40cm - 50cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Cut Flowers, Showy |
| Tolerance | Drought, Deer, Dry Soil |
| Attracts | Bees, Butterflies |
| Garden Uses | Beds And Borders |
| Garden Styles | Coastal Garden, Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow |
| Hardiness |
3 - 8 |
|---|---|
| Heat Zones |
1 - 9 |
| Climate Zones | 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 |
| Plant Type | Perennials |
| Plant Family | Compositae |
| Genus | Centaurea |
| Common names | Bachelor's Button, Cornflower, Knapweed, Mountain Cornflower |
| Exposure | Full Sun, Partial Sun |
| Season of Interest | Spring (Late), Summer (Early) |
| Height | 1' - 2' (30cm - 60cm) |
| Spread | 1' - 2' (30cm - 60cm) |
| Spacing | 15" - 18" (40cm - 50cm) |
| Maintenance | Low |
| Water Needs | Low, Average |
| Soil Type | Loam, Sand |
| Soil pH | Acid, Alkaline, Neutral |
| Soil Drainage | Well-Drained |
| Characteristics | Cut Flowers, Showy |
| Tolerance | Drought, Deer, Dry Soil |
| Attracts | Bees, Butterflies |
| Garden Uses | Beds And Borders |
| Garden Styles | Coastal Garden, Gravel and Rock Garden, Informal and Cottage, Prairie and Meadow |
How many Centaurea montana (Mountain Cornflower) do I need for my garden?
| Plant | Quantity | |
|---|---|---|
| Centaurea montana (Mountain Cornflower) | N/A | Buy Plants |
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Create a membership account to save your garden designs and to view them on any device.
Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.
Join now and start creating your dream garden!
