Centaurea, Mountain Bluet, Mountain Cornflower, Perennial Cornflower
Centaureamontana 'Alba'

Synonym:Centaurea montana f. alba

Category
Perennials

Water Requirements
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Sun Exposure
Sun to Partial Shade

Foliage
Herbaceous
Succulent

Foliage Color

Height
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)

Where to Grow

Danger

Bloom Color
White/Near White

Bloom Characteristics

Bloom Size

Bloom Time
Late Spring/Early Summer

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
From seed; winter sow in vented containers, coldframe or unheated greenhouse

Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed