Calamagrostis acutiflora 'Overdam'

Overdam Feather Reed Grass

A refined, upright ornamental grass valued for its clean variegation and strong vertical habit. Narrow green blades are edged with creamy white, providing bright contrast from spring through fall. Airy flower plumes emerge in early summer with a soft pink cast, maturing to tan and persisting into winter for extended seasonal interest.

Growth is clump-forming and non-invasive, maintaining a tidy, architectural presence without spreading or flopping.

Growing Conditions



Light: Full sun to part shade (best variegation in full sun)



Soil: Moist, well-drained; adaptable to a wide range of soil types



Water: Average; drought tolerant once established



Cold Hardiness: Excellent winter tolerance



Hardiness



USDA Zones: 4a–9b



Mature Size



Height: 4–5 ft (5–6 ft in flower)



Width: 2–3 ft



Features



White-edged variegated foliage



Upright, clump-forming habit



Early-season flower plumes



Excellent winter interest



Landscape Uses



Mass plantings and drifts



Vertical accents and borders



Foundation and backdrop plantings



Formal and naturalistic gardens



Why Growers Choose It



Bright variegation without aggressive spreading



Maintains strong form throughout the season



Reliable, low-maintenance ornamental grass

Plant type

Ornamental Grass

Height

4-5'

Width

2-3'

Hardiness zones

4–8

Sunlight

Full Sun, Partial Shade

Growth rate

Fast

Bloom time

Late Summer, Summer

Flower color

Green, Pink

Soil

Loamy

Landscape use

Accent Plant, Foundation, Mass Planting

Shape

Clump

Fruit

Yes

Deer resistant

Yes

Drought tolerant

No