Centaurea, Mountain Bluet, Mountain Cornflower, Perennial Cornflower 'Dot Purple'

Centaureamontana

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Centaurea (sen-TAR-ee-uh)
Species
montana (MON-tah-nuh)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Succulent
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness
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)
Bloom Color
Medium Purple
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Colorado Springs, Colorado

Geneva, Ohio

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Gardener's Notes:

1
positive
0
neutral
0
negative
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G
Harpersfield, OH (Zone 5a) | January 2011 | positive

Mine is not called "dot purple", just Centaurea Montana; so I am not sure this is exactly it; but I love it. I live in zone 5a in very h...Read More

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