Carex buchananii Leatherleaf Sedge / Bronze Upright Sedge is one of New Zealand's most architecturally distinctive native sedges, and a plant that has earned devoted fans in gardens around the world. An appealing native ornamental sedge, it showcases exceptionally fine, bronze-cinnamon leaves with delicate tips that are both bleached and curled, presenting itself as a dense, upright clump typically growing to 60 cm in height and width. Where the cascading Carex comans spills and flows, Carex buchananii stands firmly upright — its narrow, fine, copper-bronze to cinnamon-brown leaves arch only slightly at the tips, catching the breeze in an attractive way that is endlessly watchable in a garden setting.
Carex buccannii - bronze upright grass
Botanical Name Carex buchananii Common Name Leatherleaf Sedge, Bronze Upright Sedge, Buchanan's Sedge Family Cyperaceae Type Evergreen perennial sedge Origin Endemic to New Zealand — North and South Islands; coastal to montane up to 1,000 m Natural Habitat Beaches, lagoon, lake, and stream margins; damp ground within open forests or short tussock grasslands Mature Height Up to 60 cm — upright, dense clump Mature Spread Up to 60 cm Sun Requirements Full sun to partial shade Soil Best in moist, well-drained soil; tolerates a wide range of conditions Flowering Summer — inconspicuous small flowers; ornamentally insignificant Foliage Colour Copper-bronze to cinnamon-brown year-round, with bleached curling tips Wind Tolerance Tolerant of wind and coastal conditions Frost Tolerance Hardy — tolerates light to moderate frosts Drought Tolerance Good once established Growth Rate Moderate Maintenance Very low Conservation Status Not Threatened Planting Tips: Plant in full sun to partial shade in well-drained soil. Space plants about 30–40 cm apart for mass planting or groundcover, or 50–70 cm apart to allow plants to develop as individual specimens. Water regularly during establishment, then only during extended dry periods. Mulch to conserve moisture and suppress weeds.
Ideal Uses: Excellent in mixed plantings, either mass-planted as a groundcover or on a bank, in rock gardens, or cultivated in containers. Provides outstanding colour contrast particularly effective alongside blue-leafed plants, golden grasses, and bold-textured shrubs. Versatile as a feature plant in a pot, or planted in combinations with other ornamentals.
Ongoing Care: Trim back old or untidy foliage in late winter to promote fresh growth. This hardy sedge requires minimal maintenance once established. Easily grown from fresh seed and by the division of whole plants. Note that in ideal conditions this species can naturalise readily — monitor spreading if planting near sensitive natural areas.
