Calamagrostis acutiflora ‘Karl Foerster’, commonly known as Feather Reed Grass, is a native hybrid ornamental grass valued for its strong vertical habit, early flowering, and clean architectural form. It forms narrow, upright clumps that typically reach 4 to 5 feet tall in bloom, making it a reliable choice for adding height without excessive spread.

In late spring to early summer, tall, feathery flower plumes rise above slender green foliage, creating crisp vertical accents in the landscape. The flower heads mature to tan and remain upright well into the growing season, maintaining structure and visual interest. Its tidy, clump-forming habit allows it to hold its shape consistently throughout the season.

Well-suited for home landscapes, ‘Karl Foerster’ grows best in full sun and adapts to a range of soil types as long as drainage is adequate. Its predictable growth habit and strong form make it well suited for formal borders, mass plantings, and contemporary landscape designs.

Why choose Karl Foerster Feather Reed Grass

Strong vertical form: Adds height and structure without spreading aggressively

Early flowering: One of the first ornamental grasses to bloom

Clean habit: Maintains an upright, uniform appearance

Cultivating tips

Sun exposure: Full sun

Soil needs: Adaptable; prefers well-drained soils

Maintenance: Low—cut back to the ground in late winter or early spring

Designs for your garden

Vertical accents: Creates strong lines in borders and beds

Mass plantings: Performs well in repeating groups

Formal landscapes: Complements structured designs

Ecological benefits

Native hybrid grass: Derived in part from a North American species

Low-input plant: Requires minimal maintenance once established

Structural value: Provides lasting form and stability

Plant appearance may vary by season and growing conditions. All plants ship healthy with established root systems.