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Curly Top Sedge

Carex buchananii (KAY-reks boo-kah-NAN-ee-eye)

Family: Cyperaceae Unknown Herbaceous (1-3 ft)

Leatherleaf sedge is a low-maintenance, cool-season herbaceous perennial in the sedge family (Cyperaceae) native to New Zealand. The specific epithet commemorates New Zealand botanist John Buchanan (1819–1898). Plant in full sun, though it will tolerate partial shade. Soils should be organically rich, moist and well-draining, as it will not tolerate overly wet soils, especially in the winter. Mulch the soil to keep moisture in and regulate the temperature. Prune to about 1/3 height in the late spring to rejuvenate and remove dead leaves in the summer. Depending on winter temperatures, this plant may be an annual, or it may regrow in the spring. Propagate leatherleaf sedge by division in early spring or by seed. This sedge self-seeds easily, though it can be slow to grow after transplanting. It is resistant to browsing by deer. With its coppery bronze, fine-textured leaves that curl at the tops, it slowly grows in arching clumpings to 2 feet tall and wide. It has excellent fall color and winter interest. This sedge provides contrast to any green-leaved plant in the landscape. Use it as an accent plant in a rain garden, or mass plant it in the front of a border or along a walkway. It looks equally handsome peaking out between rocks, dotted in a meadow planting, or used for its light, hair-like texture in any large container planting. Insects, Diseases, and Other Plant Problems: Aphids are occasional pests. This plant is relatively disease-free. It can be somewhat short-lived. More information on Carex .

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 51 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft) Optimal soil pH Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
See companions & conflicts ↓

Companions & Conflicts

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.

Often confused with Carex albula
Native alternatives Carex cherokeensis Carex grayi

Full plant profile

Growing Conditions
Plant type
Annual; Ground Cover; Herbaceous Perennial; Ornamental Grasses and Sedges
Life cycle
Annual; Perennial
USDA zones
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); Sand
Soil pH
Acid (<6.0); Alkaline (>8.0); Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
12 inches-3 feet
NC region
Coastal; Mountains; Piedmont
Mature size
Height: 1 ft. 0 in. - 2 ft. 0 in. | Width: 1 ft. 0 in. - 2 ft. 0 in.
Maintenance
Low
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Arching; Clumping; Erect
Texture
Fine
Foliage
Broadleaf Evergreen
Leaf color
Brown/Copper; Gold/Yellow; Red/Burgundy
Leaf type
Sheath; Simple
Leaf arrangement
Other/more complex; Rosulate
Leaf value
Showy
Leaf size
> 6 inches long, < 1 inch wide
Hairs present
No
Leaf detail
Copper to red to bronze hair line fine leavesles than 1/2" wide and 18 to 24 inches long that curl at the end.
Flower color
Brown/Copper; Gray/Silver; Green
Flower form
Insignificant
Flower size
< 1 inch
Flower detail
Flowers are small and insignificant, this plant is grown for its leaves.
Bloom time
Summer
Fruit type
Achene
Stem detail
Triangular stems
Wildlife & Ecology
Native status
Unknown
Origin
New Zealand
Wildlife value
This plant supports various Satyr larvae.
Attracts
Butterflies; Pollinators
Food & Medicine
Fruit type
Achene
Landscape Use
Landscape location
Container; Meadow; Rock Wall; Walkways
Landscape theme
Butterfly Garden; Pollinator Garden; Rain Garden; Rock Garden; Winter Garden
Design feature
Accent; Border; Mass Planting
Garden tags
#low maintenance #winter interest #deer resistant #fall interest #HS302 #sedge #ornamental grass #butterfly friendly #larval host plant #pollinator plant #clumping #rock garden #self-seeding #border front #interesting leaves #container plant #disease resistant #cool season grass #mass planting #rain garden #perennial #wildlife friendly #accent #short lived #walkway
Problems & Resistance
Insect problems
Aphids on Ornamental Landscape Plants
Resistant to
Deer; Diseases; Drought
Propagation
Division; Seed

Planted at Hunnicutt

Nobody’s planted this one yet.