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Pennsylvania sedge

Pennsylvania sedge

Carex pensylvanica
A low, fine-textured sedge of dry woods and thickets in eastern North America, also called oak sedge because it so often grows under oaks. Its soft, arching, grass-like leaves spread by rhizomes into loose colonies and mats, and it is semi-evergreen in all but the coldest winters. Most sedges want moist to wet soil, but the Missouri Botanical Garden notes that this one does not: it is the sedge for dry shade, used as a groundcover and a lawn substitute under trees, needing a mowing only once or twice a season, if at all. It will not take heavy foot traffic.
Native: 30 US states + 4 CA provinces
Climate fit: broad (87/100)
Filler
Light
Part shade
Water
Low water
Mature size
6-12" tall · 12" apart
Hardy in zones
3a-8b
brutally cold to frosty winters
Life cycle
Perennial
Bloom period
Spring
Native in Illinois
Yes

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Native across 34 US states and Canadian provinces - a wide-ranging part of North America's plant communities.

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

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Educator packet

Plant packet
Pennsylvania sedge educator packet
A low, fine-textured sedge of dry woods and thickets in eastern North America, also called oak sedge because it so often grows under oaks. Its soft, arching, grass-like leaves spread by rhizomes into loose colonies and mats, and it is semi-evergreen in all but the coldest winters. Most sedges want moist to wet soil, but the Missouri Botanical Garden notes that this one does not: it is the sedge for dry shade, used as a groundcover and a lawn substitute under trees, needing a mowing only once or twice a season, if at all. It will not take heavy foot traffic.
Scientific name
Carex pensylvanica
Plant type
grass
Hardiness
3a-8b
Light
part-shade
Moisture
low
Spacing
12"
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Pennsylvania sedge (Carex pensylvanica). Retrieved 2026, October 19, from https://plotwright.com/plants/carex-pensylvanica
Sources used for this record
This record is compiled from the sources below.
NC State Extension Gardener Plant Toolbox
University extension service
Missouri Botanical Garden PlantFinder
Botanical research database
Lady Bird Johnson Wildflower Center Native Plant Database
Botanical research database
USDA PLANTS Database
Government data source
GBIF
Botanical research database
Wikipedia (ecoregion articles)
Botanical research database
Wikimedia Commons
Photo · CC BY 2.0
Plants For A Future
Botanical research database