Close up of calamagrostis x acutiflora 'Karl Foerster" grass
Two calamagrostis x acutiflora 'Karl Foerster' grasses.

Calamagrostis x acutiflora 'Karl Foerster' (Feather Reed Grass)

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Calamagrostis x acutiflora 'Karl Foerster' is an ornamental, cool-season grass, with plumes of wehat-colored flowers and seed pods up to five to six feet tall that appear in late spring. The plant spreads slowly through rhizomes, and won't self-sow because of its sterile seeds. 'Karl Foerster' grows best in moist, nutrient-rich soils that don't dry out. Clumps of dead grass should be cut back in winter or early spring before new shoots begin growing to maintain its appearance.

Calamagrostis x acutiflora 'Karl Foerster' is the parent cultivar of two other cultivars of more compact, dwarf feather reed grass: 'Overdam,' which is characterized by variegation with white outsides and green insides, and 'Avalanche,' which is characterized by an opposite variegation pattern.

Mature Plant Height: Medium: 30-48"
Deciduous
Sun (6+ hours) and Part Shade/Sun (4-6 hours of sun)
Soil Moisture: Medium to Wet and Well-drained
Soil Type: Clay, Rich Organic Matter, and Wide Tolerance
Bloom Time: Summer and Fall
Flower Color: Pink, Yellow, and Purple
Foliage color: Green
Features: Attracts Birds, Host Plant for Butterflies or Moths, Winter Interest, Fall Color, and Erosion Control
Tolerances: Deer Tolerant, Rabbit Tolerant, Clay Soil Tolerant, and Wet Soil Tolerant
Garden Type: Rain Garden, Container, Meadow, Small Space, and Rock Garden

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