Calamagrostis acutiflora

Ornamental grass

Grows actively in spring and summer. Seed heads persist through fall but become dormant in winter

Full sun, at least 6 hours a day

65-75°F (18-24°C). Spring or early fall are ideal planting times

Rich, moist, well-draining soil

4–9 (USDA)

Feather reed grass is usually not grown or propagated from its seeds because the plant is a hybrid. Feather is propagated by division or purchasing established plants

6.0 to 7.0

Water regularly during the first year to establish roots. Once established, it is relatively drought-tolerant but benefits from occasional watering during prolonged dry periods

Light application of balanced fertilizer in spring. Add organic mulch and compost to nutrient-poor soils

Upright, clumping, and columnar

3-6 feet (90-182 cm)

2-3 feet (60-90 cm)

18-24 inches apart for a clumping effect

Silky, plume-like flower heads in late spring to early summer

Birds, especially for seed heads in fall and winter

Specimen plant, border, accent, or as part of a naturalistic garden

Consider plants with contrasting textures and colors, such as coneflowers (Echinacea), sedum, or daylilies

To avoid damaging the new growth, cut back the stems to about 6 inches annually in late winter or very early spring

Non-toxic to humans and pets

Minimal, but can occasionally attract aphids or spider mites

Generally disease-resistant, but can suffer from rust in humid conditions

• Divide the plant every 2-3 years to prevent overcrowding and improve airflow
• Mulch around the base in winter to help protect roots from freezing
• Avoid heavy fertilization, which can lead to excessive foliage growth at the expense of flowers
• Cut back the plant in early spring to make way for new growth, leaving a few inches of the previous season’s growth to help insulate the roots