How to Grow Hair Grass
Wikimedia Commons
Hair Grass
Deschampsia cespitosa
grassHair grass is a fine-textured ornamental grass known for its delicate, hair-like foliage and airy flower panicles that create a soft, ethereal appearance in the garden. This cool-season perennial grass grows in dense clumps and produces graceful, nodding seed heads that shimmer in the light. It thrives in moist conditions and adds movement and texture to landscape designs.
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Example Hair Grass timeline · Pittsburgh, PA (Zone 6b)
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Plant Hair Grass
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Hair Grass
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, preferring cooler climates and consistent moisture
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Seedling
3-4 weeksTiny grass shoots emerge with fine, hair-like leaves in delicate clusters
Keep soil consistently moist but not waterlogged. Provide dappled light initially. Thin seedlings to proper spacing.
Establishment
8-12 weeksYoung plants develop more robust root systems and fuller clumps of fine foliage
Water regularly to establish strong roots. Avoid drought stress during first season. Do not fertilize heavily.
Vegetative Growth
Several months annuallyDense mounds of fine, delicate green foliage form, reaching full height of plant
Maintain consistent moisture. Cut back old foliage in early spring before new growth emerges. Divide every 3-4 years if desired.
Flowering
4-8 weeks (mid-summer to early fall)Delicate, hair-like flower panicles emerge on slender stems, creating an airy, ethereal effect. Flowers shimmer and nod in the breeze.
Do not deadhead if you want seed production and ornamental seed heads. Panicles fade gracefully and provide winter interest.
Dormancy
Late fall through early springFoliage turns golden-bronze in fall and persists through winter, providing structure and interest
Leave standing in winter for ornamental value and winter protection. Cut back in early spring to 2-3 inches before new growth appears.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Improve air circulation, avoid overhead watering, remove infected foliage, apply sulfur fungicide if severe
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Remove affected leaves, improve drainage and air circulation, avoid wetting foliage
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Inspect regularly, spray with horticultural oil in early spring, prune out heavily infested stems
Uses
Dried Arrangements & Floral Design
HouseholdThe delicate, shimmering flower panicles can be dried and used in flower arrangements, wreaths, and dried bouquets. The graceful, nodding seed heads provide lightweight texture to floral designs. [source]
Landscape & Garden Design
CraftHair grass is widely used as an ornamental accent in perennial borders, rock gardens, and water gardens. Its fine texture and ethereal movement add visual interest and create focal points in landscape designs. [source]
Wildlife Habitat & Seed Source
WildlifeHair grass provides shelter and nesting material for small birds and wildlife. The seeds feed songbirds and other wildlife throughout fall and winter. [source]
Erosion Control & Streambank Stabilization
HouseholdHair grass's dense root system and preference for moist soils make it useful for stabilizing banks along water features and controlling erosion in rain gardens and stream restoration projects. [source]
Harvest Tips
Hair grass is an ornamental grass, not harvested for food. Cut back entire plant to 2-3 inches in early spring before new growth emerges. Seed heads may be cut for dried flower arrangements in late summer or fall when fully mature and dry.
Fun Facts
- 🌱 Hair grass flower panicles are so light and delicate that they shimmer and move with even the slightest breeze, creating a fountain-like effect in the garden
- 🌱 This grass is one of the few ornamental grasses that actually prefers moist conditions rather than dry, making it ideal for rain gardens, pond edges, and areas with poor drainage
- 🌱 Hair grass has been used for centuries in traditional European meadows and is native to wetlands, cool mountains, and grasslands across the Northern Hemisphere
Gardening Terms
New to gardening? Learn about terms used in this guide:
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