Gray’s sedge is a native herbaceous perennial in the sedge family (Cyperaceae) native to the eastern half of North America. It was named after famed American botanist Asa Gray (1810–1888). Gray’s sedge grows best in full sun but will tolerate light shade. Either way, the plant needs adequate moisture at all times. It dislikes drying out. It prefers the wet soils of floodplains, swamps and bottomland forests. The plant propagates by seeds in the fall or by division in the spring. This is a low-maintenance sedge. The spikey seed heads are a wonderful pale green and have a long bloom time, from spring to fall. They are attractive in both fresh and dried flower arrangements. Dried fruits on the plant they add winter interest to the garden. The plants provide cover and forage for wildlife. It makes an excellent addition to a rain garden, the native garden or a winter garden. It has presence in the landscape when planted in large groups, but it can be used as an accent in the border. It can also be grown in containers. Insects, Diseases, and Other Plant Problems: No insect or disease problems. It does not perform well in dry soils. More information on Carex .
Curated pairwise relationships between this plant and others in the library — who feeds
whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.
No curated interactions recorded for this species yet.
Also noted by NC State
Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell
apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.
Herbaceous Perennial; Native Plant; Ornamental Grasses and Sedges
Life cycle
Perennial
USDA zones
5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
Light
Full sun (6 or more hours of direct sunlight a day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
Clay; High Organic Matter; Loam (Silt)
Soil pH
Acid (<6.0); Neutral (6.0-8.0)
Soil drainage
Moist | Occasional Flooding | Occasionally Wet
Available space
12 inches-3 feet
NC region
Coastal; Piedmont
Mature size
Height: 2 ft. 0 in. - 3 ft. 0 in. | Width: 1 ft. 5 in. - 2 ft. 0 in.
Growth rate
Medium
Maintenance
Low
Canopy layer
4 - Herbaceous (3-15 ft)
Form & Appearance
Habit / form
Clumping
Leaf color
Green
Leaf type
Sheath; Simple
Leaf arrangement
Alternate
Leaf shape
Linear
Leaf feel
Papery
Leaf value
Showy
Leaf size
> 6 inches long, < 1 inch wide
Hairs present
No
Flower color
Green
Flower value
Good Cut; Good Dried; Showy
Flower form
Spike
Flower size
< 1 inch
Flower detail
Blooms from May to June. The inflorescence -- a
Bloom time
Fall; Spring; Summer
Fruit color
Brown/Copper; Gold/Yellow; Green
Fruit value
Good Dried
Fruit size
< 1 inch wide
Fruit detail
It has a long bloom time from spring to fall producing greenish yellow to brown seed heads that look like spiked clubs and are attractive in both fresh and dried flower arrangements. If the dried fruits remain on the plant they add winter interest to the garden. Displays from June to September
Wildlife & Ecology
Native status
Native
Origin
E. Canada to N. Central & E. U.S.A
Wildlife value
This plant supports larvae of certain satyrine butterflies (Nymphalidae-Satyrinae). Birds and small mammals consume the achenes and use the plants for cover.