Photo by Arrowhead Alpines
Used with permission, all rights reserved
Centaurea jacea
Also Known As
- Centaurea jacaea
- Knapweed
Plant type
perennial
size
- H: 3'
- W: 2'
planting zones
- 5a-9b
Centaurea jacea plant details
Centaurea jacea is a broadleaf deciduous perennial with blue foliage. In summer lavender flowers emerge. Features fuzzy texture. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun and occasional water. Prefers to be dry in summer. Does well in average and well-drained soil. A good option if you're seeking something heat tolerant.
CHARACTERISTICS OF Centaurea jacea
- Plant type: perennial
- Plant family: asteraceae
- Foliage: deciduous blue
- Mature size: 2 FT wide, 3 FT tall
- Flowers: lavender blooms in summer
GROWING CONDITIONS for Centaurea jacea
- USDA Zones: 5a - 9b
- Sun exposure: sun
- Watering frequency: occasional
- Resistant to: heat
- Soil needs: average and well-drained
Nursery contributed plant descriptions
Garden photo gallery of Centaurea jacea
By: Uoaei1
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By: Isidre blanc
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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By: Isidre blanc
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
View Original Photo
By: Isidre blanc
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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By: Franz Xaver
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 license.
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By: Jonas Bergsten
This work has been released into the public domain by its author.
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By: Sten Porse
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 license.
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By: Guido Gerding
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 license.
View Original PhotoGardening facts about Centaurea jacea plant
How to Grow Centaurea jacea
Sun Exposure
- sun
Water Needs
- occasional
Water Needs
- dry in summer
Soil Needs
- average
- well-drained
Special Situation
- heat tolerant
Features
Foliage Color
- blue
Flower Color
- lavender
Wildlife
- bees
Flower Season
- summer
Foliage Season
- deciduous
Texture
- fuzzy
Landscape groups by tags
See other plant types of Centaurea for your garden
aka Caramia Perennial Cornflower
Plant Type
Perennial
Zones
3a-9b
Size
Height: 1'-2'
Width: 1'-2'
- sun - dappled shade
- regular - drought tolerant
aka Cornflower
Plant Type
Perennial
Zones
6a-10b
Size
Height: 24"
Width: 12"
- sun
- occasional - drought tolerant
aka Cyanus segetum 'Black Gem', Black Gem Bachelor's Buttons
Plant Type
Annual / Biennial
Zones
1-11
Size
Height: 12"-24"
Width: 6"-12"
- sun
- regular - drought tolerant
- dry in summer
aka Cyanus segetum 'Blue Diadem', Blue Diadem Bachelor's Buttons
Plant Type
Annual / Biennial
Zones
1-11
Size
Height: 24"-36"
Width: 12"-30"
- sun - mostly sun
- occasional - drought tolerant
- dry in summer
aka Centaurea scabiosa 'Perennial Butterfly', Greater Knapweed, Perennial Bachelor Button, Perennial Butterfly Cornflower
Plant Type
Perennial
Zones
3a-10b
Size
Height: 2'
Width: 3'
- sun - mostly sun
- regular - occasional
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