Slender Hairgrass

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Other Names:
Tufted Hairgrass, Slender Hairgrass
Latin Name:
Deschampsia cespitosa, Deschampsia elongata
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Slender Hairgrass (Deschampsia spp.) is a graceful, airy native bunchgrass — shimmering clouds of fine flower stalks over tidy tufts of green — and a native food whose seeds work like a cereal grain.2, 4

Edible & Medicinal Uses

The seeds, harvested in fall, make a fine cereal grain — cook them into a hearty breakfast mush much like rye, or grind them into a flour to blend with other cereal flours for breads, muffins, biscuits, cookies, and crackers.1, 4

Ornamental Qualities

A beloved ornamental grass, Slender Hairgrass forms rounded tufts of slim, deep-green blades topped by finely branched, pale flower stalks that catch the light. New growth often flushes rosy-pink in cool weather, some forms carry creamy variegation, and the yellow-brown flower haze holds into early winter for lasting interest. It grows well even in partial shade where other grasses struggle.1

Environment & Culture

Ecology: Native to moist meadows, streamsides, and openings across the West, Slender Hairgrass tolerates shade and damp ground, binds soil, and provides cover and seed for wildlife — a versatile grass for restoration and the shade garden alike.1, 2

Culture: Native grass seeds like these are a traditional grain, gathered and ground into meal. We offer it with respect for that living knowledge and invite support for Indigenous-led restoration through our Charitable Giving page.4

In the Kitchen

Gather the fine seed in fall, then simmer it into a rye-like porridge or grind it into flour to blend into rustic breads and baked goods. (Growing and harvest details are on the Planting Guide tab.)

Attributes

  • Native Range: Across the West; moist meadows, streamsides, openings1
  • USDA Zones: ~4–93
  • Light: Full sun to part shade (tolerates shade)1
  • Water: Moderate to moist1
  • Soil: Adaptable; likes moisture-retentive ground1
  • Habit: Tufted bunchgrass; airy flower stalks, winter interest2
  • Edible: Seeds as a cereal grain (mush or flour)4

References

  1. Native Foods Nursery field notes; USDA NRCS, Deschampsia cespitosa.
  2. Pojar, J. & MacKinnon, A., Plants of the Pacific Northwest Coast, 2014.
  3. USDA PLANTS Database, Deschampsia cespitosa.
  4. Moerman, D., Native American Ethnobotany, 1998.

Pot Sizing Guide

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Planting Guide: Slender Hairgrass (Deschampsia cespitosa)

Tip: One of the few grasses that thrives in part shade and moist ground — use it where sunnier grasses fail, and enjoy its airy flower haze from summer into winter.

When Your Plant Arrives

Open the box promptly and lift your plant out gently, holding the pot rather than the stem. Leave it in its biodegradable eco-pot for now — the roots are settled and don’t need disturbing yet. Give it a slow, thorough drink until water runs through the bottom, then set it somewhere bright but sheltered, out of harsh afternoon sun, drying wind, and frost. Let it rest and acclimate there for a few days before planting, so the move from our greenhouse to your garden is a gentle one. If anything doesn’t look right, please contact customer service within 7 days of delivery and we’ll take care of you.

Choosing a Site

Light: Full sun to part shade (shade-tolerant).

Soil: Moisture-retentive; moderate to moist.

Space: 12–18 in apart.

Planting Steps

Plant plugs or sow seed in fall or spring; firm and water in, and keep lightly moist to establish.

If it came in a biodegradable eco-pot, plant it pot and all — the pot is pressed from composted cow manure, so it melts into the soil and gives the young roots their first feed. No need to remove it.

Watering & Care

Establishment: Water through the first season.

After establishment: Easy; tolerates damp and shade.

Maintenance: Cut back in late winter.

Protection

Wildlife: Cover and seed for birds; good in shade restoration.

Deer: Generally tolerant.

Harvest Basics

Season: Seed ripens in fall.

Safety: As with any wild grass grain, inspect the seed heads and discard any dark, swollen, purple-black grains (ergot, a toxic fungus).

Use: Cook the seeds into a rye-like breakfast mush, or grind into flour to blend with other cereals.