This perennial Centaurea is commonly called Mountain Bluet or Mountain Cornflower, and it is rugged and hardy, growing in most soil types and climates.
The vigorous clump-forming plant has silvery-green foliage and stems that are slightly hairy. The blooms are large, solitary, and fringed and are excellent for cutting.
The plant does best in moisture-retentive soils. Care includes removing spent flowers after blooming. The cornflower plants can be trimmed back hard after blooming. Mountain Centaurea is known for self-sowing, so deadheading is needed if spreading is not desired.
USDA Zones: 3 - 8
Height: 12 - 24 inches
Bloom Season: Late spring to mid-summer
Bloom Color: Blue
Environment: Full sun
Soil Type: Clay, sandy, normal loam
Deer Resistant: Yes
House Plant: No
Latin Name: Centaurea Montana
Average Germ Time: 14 - 28 days
Light Required: Yes
Depth: 1/4 inch
Sowing Rate: 10 seeds per plant
Moisture: Keep seeds moist until germination
Plant Spacing: 12 inches