Blue Blue Bachelor's Button
Centaurea montana
sen-TAW-ree-uh mon-TAN-uh
Perennials: Wildflower
Blue Cornflower; Mountain Bluet
Min. Temp
Hardy: 28°
Plants form a bushy clump of gray-green leaves, setting off a display of clear-blue shaggy flowers in early summer. Removing faded flower heads will encourage repeat blooming. Ruggedly hardy, this plant will grow in most types of soils and climate regions. Plants may be pruned back hard in mid-summer to maintain a compact habit.
Appearance
Summer Foliage
Blue-Green
Fall Foliage
Blue-Green
Flower Color
Blue
Blooming Time
Early Summer - Mid Summer
Habit
Mounding
Height
18–24 in
Spread
18–24 in
Form
Daisy Type
Characteristics
Type
Open-Pollinated
Safety
Non-toxic
Growth Rate
Moderate
Tolerance/Resistance
Drought Tolerant
Attracts
Attracts Honeybees & Pollinators
Uses/Placement
Cut Flower
Optimal Growing Conditions
Sun Exposure
Full Sun - Part Shade
Soil Texture
Loamy
Soil Drainage
Well-drained
Soil Moisture
Dry to Average
Soil PH
Neutral: 6.5-7.0
PH Tolerance
Prefers slightly alkaline soil
Soil Amendment(s)
Compost
Fertilizer
Light Feeder
Fertilizer Formula
Balanced Fertilizer
Fertilizer Timing
Early Spring
Micronutrients
Trace Minerals Beneficial
Care
Care Level
Low
Behavior and Propagation
Spreading
Moderate Spreader
Propagation Method
Benefits from Pollinators
Propagation Licensing
Seed propagation permitted
Division Timing
Spring or Fall Division