Oak Sedge
Carex pensylvanica
The lawn alternative for dry shade under oaks, where grass gives up. Soft, semi-evergreen, self-maintaining.
Typically 1 pint–1 gal · $9–$30 · final price at pickup
- Thu, Aug 138 AM – 4 PM
- Fri, Aug 148 AM – 4 PM
- Sat, Aug 158 AM – 2 PM
The only ground cover that's genuinely adapted to dry, acidic, root-competitive shade under mature oaks. it evolved there, and it shows.
Oak Sedge is the sedge that grows under oaks, literally. It evolved in the dappled shade and dry, acidic, root-competitive soils beneath oak canopy, which makes it one of the few plants that thrives in exactly the situation most homeowners find most difficult to plant. Under a mature red oak or white oak, in the dry zone where even lawn grass gives up, Oak Sedge spreads quietly and looks right at home. Fine-textured, low-growing, and semi-evergreen, it forms a soft carpet that can be left unmowed for a naturalistic look or maintained at 3–4 inches with occasional mowing as a lawn alternative. The color is bright green in spring, deepening slightly in summer, and holding through mild winters in most Mid-Atlantic climates. It's slow to establish from small plants. Give it two seasons before expecting significant spread. Once established, it's essentially self-maintaining, competing well against weed invasion in its preferred dry-shade conditions. Plant it in drifts of at least 7–9 plants for the fastest coverage.
A nursery-grown plant, ready for the ground.
Healthy, container-grown oak sedge propagated on-site at Hill House from regional genetics. Includes a one-page care card. We make every effort to supply plants as listed; occasionally we substitute a similar species of equal value.
Plant oak sedge instead of English ivy (Hedera helix), pachysandra (Pachysandra terminalis). Same job in the garden, without the spread.
- Sun
- Part sun
- Water
- Dry
- Mature size
- 6"–1' · 8–15 in wide
- USDA zones
- 3–8
- Family
- Cyperaceae
- Native range
- Eastern North America, from Nova Scotia south to Georgia and west to the Great Plains; dry woodland habitats
Care notes for oak sedge.
Plant in part to full shade in dry to average, well-drained, ideally acidic soil. Best under oak canopy or in dry, root-competitive conditions. Can be mowed at 3–4 inches or left to grow naturally. Trim back in early spring if desired. Slow to establish. don't lose patience in year one. No fertilizer or irrigation needed after establishment.
Pairs well with these.
Same light, same soil, same wildlife. Janet's picks to plant alongside oak sedge.
Or skip the guesswork.
Curated packages bundle complementary species for an instant habitat. One reservation, one pickup day, a printed layout map.
Short on Space Package
For gardeners who have an abundance of passion but are short on space, this package features tidy, upright, clump-forming natives that behave and function well in small spaces.
Shade Bed Package
Ferns, sedges, and woodland natives that thrive under existing trees.
Birder’s Paradise Package
For the avid bird watchers and budding ornithologists in our community, the Birder’s Paradise Package consists of species that Hill House Nursery staff and longtime native plant advocates such as Doug Tallamy consider ‘premier bird garden plants’.