Plant Profile: Centaurea montana

Taxonomy: Centaurea montana

Names

Mountain Bluet, Perennial Bachelor's Button, Perennial Cornflower

  • Photo of Centaurea montana (Centaurea montanas)

Phonetic Spelling:sen-TAR-ee-ah mon-TAY-nah

Genus:Centaurea

Species:montana

Family:Asteraceae

Mountain Bluet is a perennial flower that grows upright and forms clumps, originally found in Europe. It is distinguished by its solitary, fringed cornflowers, which display a vibrant blue hue with reddish-blue centers and black-edged bracts surrounding the flower heads.

This plant thrives in average conditions, preferring dry to medium moisture levels and well-drained soil, and it flourishes in full sunlight. Mountain Bluet is resilient, capable of withstanding drought and poor soil conditions. It can reproduce in two ways: through stolons, which quickly create colonies under ideal growth conditions, or by seed. If the spent blooms are removed, additional flowers may appear in the fall, and this practice also helps manage seed dispersal. To maintain its health, the plants should be divided every two to three years.

The genus name is derived from a popular term for various plants used in the late 14th century, tracing back to Medieval Latin "centaurea," which comes from the Latin "centaureum" and the Greek "kentaureion," linked to "kentauros," meaning "centaur." This nomenclature reflects the plant's medicinal uses, attributed to Chiron, the centaur of mythology. The specific epithet indicates a connection to mountainous regions or origins.

Centaurea montana Feature Summary

Centaurea montana Image Gallery

Tags

#drought tolerant
#perennial
#blue flowers
#low maintenance
#spreading
#clumping
#dry soil intolerant

Similar Plants

Centaurea montana Feature Summary

Fruit
Finely hairy, straw-colored at maturity with a tuft of short, stiff, light brown bristles at the tip.
Cream/Tan
< 1 inch
Flowers
Fringed, rich blue cornflowers with reddish blue centers and black-edged involucre bracts
Red/Burgundy
Blue
Good Cut
Showy
Long-lasting
7 - 20 petals/rays
1-3 inches
Leaves
Gray-green, lance-shaped lower leaves to 7" long
Green
Gray/Silver
Lanceolate
> 6 inches
< 1 inch
Stem
Stems are erect, single or multiple from the base, hairy and usually unbranched, sometimes few-branched, 1 - 2 feet tall
Green
Gray/Silver
Hairy (pubescent)
Straight
Whole Plant Traits
Perennial
Spreading
Clumping
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)
Occasionally Dry
Coastal
Mountains
Piedmont
4a
4b
5b
5a
6a
6b
7a
7b
8b
8a
3a
3b
Clay
Loam (Silt)
Sand
Landscape
Cutting Garden
Drought Tolerant Garden
Pollinator Garden
Cottage Garden
Border
Mass Planting
Walkways
Meadow
Naturalized Area
Butterflies
Bees

Centaurea montana Attributes

Centaurea montana: Uses (Ethnobotany)

Borders, cottage gardens and naturalized areas

Centaurea montana: Country Or Region Of Origin

Europe

Centaurea montana: Particularly Resistant To (Insects/Diseases/Other Problems)

Drought tolerant

Centaurea montana: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Centaurea montana: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Centaurea montana: Play Value

Attractive Flowers
Attracts Pollinators
Buffer
Colorful
Defines Paths
Easy to Grow
Edible fruit
Fragrance
Pieces Used in Games
Screening
Shade
Sound
Textural
Wildlife Cover/Habitat
Wildlife Food Source
Wildlife Larval Host
Wildlife Nesting
Wind Break
Wind Shimmer

Centaurea montana Fruit

Centaurea montana: Fruit Description

Finely hairy, straw-colored at maturity with a tuft of short, stiff, light brown bristles at the tip.

Centaurea montana: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Centaurea montana: Fruit Color

grass
Cream/Tan

Centaurea montana: Display/Harvest Time

Fall
Spring
Summer
Winter

Centaurea montana: Fruit Length

< 1 inch
1-3 inches
> 3 inches

Centaurea montana: Fruit Width

< 1 inch
1-3 inches
> 3 inches

Centaurea montana Flowers

Centaurea montana: Flower Description

Fringed, rich blue cornflowers with reddish blue centers and black-edged involucre bracts

Centaurea montana: Flower Color

filter_vintage
Blue
filter_vintage
Red/Burgundy

Centaurea montana: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Centaurea montana: Flower Value To Gardener

Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy

Centaurea montana: Flower Bloom Time

Winter
Spring
Summer
Fall

Centaurea montana: Flower Petals

2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals

Centaurea montana: Flower Shape

Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel

Centaurea montana: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Centaurea montana Leaves

Centaurea montana: Leaf Description

Gray-green, lance-shaped lower leaves to 7" long

Centaurea montana: Leaf Color

spa
Gray/Silver
spa
Green

Centaurea montana: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Centaurea montana: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Centaurea montana: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Centaurea montana: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Centaurea montana: Hairs Present

No
Yes

Centaurea montana: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Centaurea montana: Leaf Feel

Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy

Centaurea montana: Leaf Width

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Centaurea montana Stem

Centaurea montana: Stem Description

Stems are erect, single or multiple from the base, hairy and usually unbranched, sometimes few-branched, 1 - 2 feet tall

Centaurea montana: Stem Color

grass
Gray/Silver
grass
Green

Centaurea montana: Stem Is Aromatic

No
Yes

Centaurea montana: Stem Surface

Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)

Centaurea montana: Stem Form

Straight
Zig Zags

Centaurea montana Whole Plant Traits

Centaurea montana: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Centaurea montana: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Centaurea montana: Growth Rate

Slow
Medium
Rapid

Centaurea montana: Maintenance

Low
Medium
High

Centaurea montana Cultural Conditions

Centaurea montana: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Centaurea montana: Soil pH

Acid (<6.0)
Alkaline (>8.0)
Neutral (6.0-8.0)

Centaurea montana: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Centaurea montana: NC Region

Coastal
Mountains
Piedmont

Centaurea montana: USDA Plant Hardiness Zone

thermostat
3a
thermostat
3b
thermostat
4a
thermostat
4b
thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Centaurea montana: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Centaurea montana Landscape

Centaurea montana: Landscape Theme

Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden

Centaurea montana: Design Feature

Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree

Centaurea montana: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Centaurea montana: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland

Centaurea montana: Attracts

Bats
Bees
Butterflies
Frogs
Hummingbirds
Moths
Pollinators
Predatory Insects
Reptiles
Small Mammals
Songbirds
Specialized Bees