Plant Profile: Koeleria glauca

Taxonomy: Koeleria glauca

Names

Large Blue Hair Grass

  • Photo of Koeleria glauca (Koeleria glaucas)

Phonetic Spelling:koh-LER-ee-ah GLAW-kah

Genus:Koeleria

Species:glauca

Family:Poaceae

This cool-season grass may enter a state of partial dormancy during hot weather. It features robust bluish-green foliage and is classified as a short-lived perennial. To encourage fresh growth, it should be cut back to the ground in winter, resulting in dense, rounded clumps.

Preferred conditions include full sunlight and well-drained soil that ranges from moist to moderately dry. It thrives best in sandy soils enriched with organic matter and does not perform well in clay soils or shaded areas.

Regarding pests and diseases, this grass is generally resilient, facing no significant issues. However, in typical garden environments that are moist and fertile, its lifespan may be limited to just a few years.

Koeleria glauca Feature Summary

Koeleria glauca Image Gallery

Tags

#showy flowers
#drought tolerant
#silvery
#mass planting
#air pollution tolerant
#edging
#dense
#clumps
#groups
#dry soils tolerant
#black walnut toxicity tolerant

Similar Plants

Koeleria glauca Feature Summary

Attributes
Flowers
Tufts appear May-June, glossy light green and translucent inflorescences dry to buff color on stems 6"-12" above the leaves.
White
Green
Gray/Silver
Leaves
Blue-green blades
Green
Blue
Other/more complex
Rosulate
Filiform
> 6 inches
< 1 inch
Whole Plant Traits
Ornamental Grasses and Sedges
Rounded
Erect
Dense
Clumping
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Good Drainage
Landscape
Rock Garden
Mass Planting
Small groups
Drought
Pollution
Dry Soil
Black Walnut
Patio
Walkways
Small Space
Slope/Bank
Pool/Hardscape

Koeleria glauca Attributes

Koeleria glauca: Country Or Region Of Origin

Asia, Europe

Koeleria glauca: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Koeleria glauca Flowers

Koeleria glauca: Flower Description

Tufts appear May-June, glossy light green and translucent inflorescences dry to buff color on stems 6"-12" above the leaves.

Koeleria glauca: Flower Color

filter_vintage
Gray/Silver
filter_vintage
Green
filter_vintage
White

Koeleria glauca: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Koeleria glauca: Flower Value To Gardener

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

Koeleria glauca: Flower Bloom Time

Winter
Spring
Summer
Fall

Koeleria glauca Leaves

Koeleria glauca: Leaf Description

Blue-green blades

Koeleria glauca: Leaf Color

spa
Blue
spa
Green

Koeleria glauca: Leaf Type

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

Koeleria glauca: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Koeleria glauca: 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

Koeleria glauca: Leaf Margin

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

Koeleria glauca: Hairs Present

No
Yes

Koeleria glauca: Leaf Length

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

Koeleria glauca: Leaf Width

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

Koeleria glauca Whole Plant Traits

Koeleria glauca: 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

Koeleria glauca: 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

Koeleria glauca: Growth Rate

Slow
Medium
Rapid

Koeleria glauca: Maintenance

Low
Medium
High

Koeleria glauca: Texture

Fine
Medium
Coarse

Koeleria glauca Cultural Conditions

Koeleria glauca: 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)

Koeleria glauca: Soil Drainage

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

Koeleria glauca: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Koeleria glauca: USDA Plant Hardiness Zone

thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Koeleria glauca: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Koeleria glauca Stem

Koeleria glauca: Stem Is Aromatic

No
Yes

Koeleria glauca Landscape

Koeleria glauca: 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

Koeleria glauca: 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

Koeleria glauca: 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

Koeleria glauca: 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