Blue hairgrass (Koeleria glauca)

Blue hairgrass

The plants foliage is bluish-grey in colour and is 15 to 30 cm in height. Flowers bloom from spring to summer and can be 35 to 55 cm high.

Scientific classification

Species

Blue hairgrass (Koeleria glauca)

Grasses, sedges and allies

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Perennial

Lifespan

Grass

Plant Type

15 cm to 61 cm

Plant Height

15 cm to 30 cm

Spread

0 - 35 ℃

Ideal Temperature

Summer

Growth Season

Slow

Growth Rate

Images of Blue hairgrass

Distribution of Blue hairgrass

Distribution Map

Blue hairgrass is a grass species with a natural range spanning across temperate and cooler regions of Europe and Asia. It is native to vast expanses of the European continent and parts of Central and East Asia. Beyond its original habitat, blue hairgrass has been introduced and is cultivated in various other areas, reflecting its adaptability to different environments.

Native

Cultivated

Invasive

Introduced

No species reported

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Quickly Identify Blue hairgrass

Bluish-green foliage in dense tufts

Leaves with a strong glaucous sheen

Narrow, linear leaves with rolled edges

Mature inflorescences stand 6-12 inches above leaves

Glossy green flowers transition to translucent, then buff color

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Care Guide for Blue hairgrass

Every week

Water

Full sun

Sunlight

0 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Blue hairgrass thrives in well-drained soil with consistent moisture, reflecting its native habitat's moderate rainfall. It needs weekly watering for optimal growth. As an evergreen, blue hairgrass retains leaves year-round and requires careful water management in colder months to avoid overhydration.

Fertilize: Blue hairgrass benefits from mulch or compost for enhanced growth and flowering. Apply a thin layer at the growing season's start, avoiding over-fertilization that harms foliage. Withhold fertilizer during dormancy, use gloves, prevent compaction, and adjust amounts based on blue hairgrass's response while maintaining moderation.

Pruning: Blue hairgrass features slim, blue-green foliage and should be pruned in early spring. Remove dead stalks and spent flower heads using clean tools to promote healthy growth and additional blooms, enhancing both aesthetics and longevity while aligning with the plant's natural growth cycle.

Propagation: Blue hairgrass thrives in well-drained, cool temperate grasslands and should be propagated by dividing clumps during active growth. Ensure each division has roots and replant immediately. Adequate watering and avoiding overcrowding are essential for healthy establishment in the garden.

Repotting: Repot blue hairgrass every 2-3 years in spring into a wider pot to support its growth. After repotting, maintain moist soil and place blue hairgrass in bright, indirect light. Use shallow containers to prevent excess water retention and ensure healthy roots.

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