How to Grow Tufted Hair Grass
Deschampsia cespitosa
Deschampsia is a graceful, clump-forming grass with clouds of airy flower heads that shimmer in the slightest breeze. Plant in sun to partial shade in moist, heavy soil — one of the few grasses that thrives on clay. Cut back hard in late February. Semi-evergreen in mild winters. Native to the UK and fully hardy.
Yearly Lifecycle
Care Essentials
No feeding needed. Deschampsia is a native grass that thrives in average to poor soil. It naturally grows in meadows and woodland edges without supplemental nutrition.
Watch For
- Self-seeding (can be prolific in ideal conditions)
- Rust in very humid summers
- Centre die-back in old clumps (divide to rejuvenate)
Track your Tufted Hair Grass care schedule — pruning, feeding, and seasonal tasks
Start planning freeCare Requirements
☀️ Light
Full sun to partial shade; tolerates more shade than most grasses
Deschampsia performs well in sun or partial shade. In heavy shade it produces fewer flower heads but maintains good foliage. It is one of the best grasses for lightly shaded or north-facing borders.
💧 Watering
Prefers moist conditions; thrives in heavy or clay soils
Unlike most ornamental grasses, deschampsia prefers consistently moist soil and tolerates temporary waterlogging. It needs little or no supplemental watering in the UK climate. Drought in summer can cause early browning.
🌱 Fertilizing
No feeding needed; thrives in average to poor soil
Deschampsia is a native grass of meadows and woodland edges and grows naturally without supplemental nutrition. Feeding rich in nitrogen encourages lush leafy growth at the expense of the delicate airy flower heads.
✂️ Pruning
Cut back hard to 10 cm in late February each year
Cut all growth to 10 cm in late February before new shoots emerge — earlier than most grasses. The semi-evergreen foliage can be left through winter for structure and wildlife value, but must be removed before spring growth starts.
❄️ Overwintering
Fully hardy; no winter protection needed
Deschampsia is a UK native and fully hardy in all but the most extreme conditions. The semi-evergreen foliage provides winter structure and seedheads offer food for finches. No protection is needed.
Growing Tips
Cut back in late February — timing matters
Deschampsia starts growing earlier than almost any other ornamental grass. Cut all old growth to 10 cm before new green shoots appear — usually late February. Delay past March and you risk cutting off fresh growth.
Plant in drifts for maximum effect
A single plant is pretty but a drift of five or more creates a spectacular shimmer effect when backlit by low autumn or winter sun. Space plants 50 cm apart and allow them to knit together over two to three seasons.
Thrives where others fail
Deschampsia is one of the few ornamental grasses that genuinely thrives on heavy, clay or waterlogged soils. If other grasses have struggled in a moist or shady spot, this is the grass to try.
Manage self-seeding in ideal conditions
In moist, fertile soils deschampsia can self-seed freely. Deadhead flower heads before they shed seed if you want to control spread, or embrace the natural colonisation in wilder areas of the garden.
Pests & Diseases
Pest Aphid
Identification: Clusters of small soft-bodied insects on new shoot tips in spring. Affected shoots may be slightly distorted.
- Blast off with a strong jet of water
- Encourage natural predators — deschampsia's structure provides habitat for beneficial insects
- Spray with insecticidal soap if infestation is severe
Pest Slug
Identification: Shredded or eaten emerging shoot tips in spring. Slime trails visible on foliage in damp conditions.
- Apply ferric phosphate slug pellets around newly emerging growth in spring
- Surround plants with sharp grit as a barrier
- Apply metaldehyde pellets sparingly around the base in early spring
Disease Rust Puccinia spp.
Symptoms: Orange-brown powdery pustules on leaf surfaces in humid summers. Affected leaves may yellow and die back prematurely.
Treatment: Remove and dispose of badly affected leaves. Improve air circulation by thinning overcrowded clumps.
Prevention: Ensure good spacing between plants. Cut back hard annually to remove old infected material. Avoid overly moist, stagnant sites.
Disease Centre Die-Back Various causes (age, congestion, waterlogging)
Symptoms: Dead brown patch in the centre of an established clump while outer growth remains green. The clump loses its round shape.
Treatment: Lift the entire clump in autumn or early spring. Discard the dead central portion. Divide healthy outer sections and replant at the correct spacing.
Prevention: Divide clumps every 3–4 years to prevent congestion. Ensure adequate drainage even in moist soils.
Log Tufted Hair Grass in your garden — track growth, care, and harvests year after year
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