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Lepidosperma australe

Southern Sword Sedge, Austral Sword Sedge

Lepidosperma australe is a stiffly upright rush with blue-green foliage. Brown seed heads are borne across the plant during summer. This NZ native, perennial grass typically grows to 1 m tall and 50 cm wide, but can grow to 2 m tall in favourable environments. Lepidosperma australe is commonly added to a mixed planting, mass planted on a bank, used in riparian plantings, or included in wetland areas.

Lepidosperma australe grass growing in a wetland.

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Suited to regions:All regions
Plant type:Grasses
Height:1.00 m
Spread:50 cm
Flowering time:Summer
Tolerances:Coastal, Hardy, Wet
Garden uses:Borders, Living areas, Paths & Steps, Ponds, Pool areas
Garden styles:Alpine, Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Modern, Native, Riparian
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known asSouthern Sword Sedge, Austral Sword Sedge
Sku10123

What growing conditions does Lepidosperma australe prefer?

Lepidosperma australe thrives in full sun to partial shade and prefers moist, well-drained to seasonally wet soils. It performs well in sandy, loamy, or peaty soils and tolerates poor fertility and coastal conditions. This sedge is well-suited to wetland margins, damp garden spots, and coastal restoration projects. Once established, it is hardy, low-maintenance, and tolerant of light frost, wind, and salt exposure, making it ideal for naturalistic or ecological landscapes.

Lepidosperma australe care tips

Care for Lepidosperma australe by matching moisture and feeding to its growing season. Water during establishment and prolonged dry periods, especially in containers. Remove damaged foliage and tidy old flower stems when needed. Avoid heavy feeding, which can encourage weak growth. Divide crowded clumps if appropriate for the variety. Keep the crown clear of wet debris, maintain good drainage, and check surrounding areas for seedlings that need removing. Regular checks help you respond promptly to changing growing conditions.

Lepidosperma australe size, spacing, and growth rate

Lepidosperma australe typically reaches about 1 m tall and 50 cm wide in suitable conditions. Allow about 50 cm between centres for separate specimens, leaving room for mature foliage and good airflow. It has a moderate growth rate under suitable conditions. Use the mature spread as a guide when planting beside paths, walls, or neighbouring plants. Containers can limit overall size, so choose a pot that supports healthy root development. Check the developing plant regularly and adjust surrounding planting as needed.

Landscaping uses for Lepidosperma australe

Use Lepidosperma australe for textured borders, repeated group planting, and natural garden designs. Position it where its natural form can be appreciated and allow sufficient space for mature growth. Combine it with plants that enjoy similar light, soil, and watering conditions for a practical and cohesive display. Repeated planting adds rhythm, while a single specimen can create a distinctive focal point. Choose a position that balances visual appeal with easy access for care.

Why buy Lepidosperma australe from The Plant Company?

Buy Lepidosperma australe from The Plant Company, NZ's most trusted plant nursery. Choose from our extensive range and get practical advice to help match your plants to your local conditions. Our team makes online ordering straightforward, with careful packing and delivery throughout New Zealand. Whether you are planning textured borders or refreshing an established display, we can help you select suitable plants. Explore the available options and take the next step towards a beautiful, rewarding planting project.

Questions and Answers

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