Carex Pennsylvanica

Oak Sedge

Carex pensylvanica, commonly known as Pennsylvania Sedge, is a fine-textured, cool-season native sedge valued for its soft, flowing habit and ability to form a natural, lawn-like groundcover in dry shade. Narrow, bright green leaves emerge in spring, create a low, meadow-like carpet through the growing season, and remain attractive into fall, while small, inconspicuous flower spikes appear in spring. Its adaptability and understated appearance make it ideal for naturalizing under trees and in woodland settings.

Type: Perennial sedge (grass-like)

Mature Size:
Width: spreading
Height: 6–12 in
(10-year size: forms wide colonies by rhizomes)

USDA Zones: 3a–8b
Form: Low, spreading, groundcover-forming
Light: Partial shade to full shade (tolerates some sun in cooler climates)
Soil: Well-drained soils; prefers dry to average woodland conditions
Water: Low to moderate; very drought tolerant once established

Wildlife: Provides cover; supports native insects


Features & Landscape Uses


Excellent native lawn alternative for shade



Fine texture creates a soft, natural look



Spreads to form low-maintenance groundcover



Ideal for woodland, slopes, and naturalized areas




Care
Very low-maintenance. Can be mowed once or twice a year if a lawn-like appearance is desired, or left natural. Cut back in early spring if needed. Prefers well-drained soils and tolerates dry shade once established. Avoid wet, poorly drained conditions.

Plant type

Perennial, Sedge

Height

6-12''

Width

12"

Hardiness zones

3–8

Sunlight

Full Shade, Partial Shade

Leaf color

Green

Soil

Average, Well Drained

Landscape use

Border, Groundcover, Mass Planting

Shape

Ground Cover, Wide Spreading

Drought tolerant

No