Photo by Melody

PlantFiles: Pink Persian Cornflower, Knapweed
Centaurea dealbata 'Rosea'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Centaurea (sen-TAR-ee-uh) (Info)
Species: dealbata (day-al-BAH-tuh) (Info)
Cultivar: Rosea

7 members have or want this plant for trade.


Unknown - Tell us

15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Unknown - Tell us

Bloom Color:

Bloom Time:
Late Spring/Early Summer
Mid Summer


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By kahuna1342
Thumbnail #1 of Centaurea dealbata by kahuna1342


2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive avlind On Jun 24, 2012, avlind from Coatesville, PA wrote:

I also happened upon this plant in the clearance section of a nursery. Its blooming time in Pa. is spring -a time I needed more blooming plants. The only problem is that all the stems fall over. This year I tied a string around the whole plant but next year I will look for a wire plant holder.

Positive rweiler On Apr 25, 2010, rweiler from Albuquerque, NM wrote:

I think I found this plant somewhere random like Walmart. I was a novice gardener at the time and didn't know what to do with it and what to expect. I moved it several times in the first year. Once it finally found it's home (full sun and that means SUN it New Mexico) it has thrived with little water and little attention. It doesn't bloom in abundance but has beautiful foliage and shape. I divided it at 2 years and it never missed a beat. It is hard to find plants in New Mexico (Arid, very Akaline, Zone 6-7) that are indestructable. This plant has become a surprising favorite.


This plant has been said to grow in the following regions:

Corydon, Indiana
Bellevue, Michigan
Grand Haven, Michigan
Republic, Missouri
Albuquerque, New Mexico
Hugo, Oklahoma
Gresham, Oregon
Coatesville, Pennsylvania
Kalama, Washington
Kendall, Washington

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