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Baumea rubiginosa (Orange Nutsedge)

Baumea rubiginosa, commonly known as the Orange Nut Sedge, is a vigorous, NZ native rush that features slender, green foliage. Red-brown seed heads are borne during summer above the foliage, which adds an interesting element to this plant as it grows to 1.5 m wide and 1 m high. Baumea rubiginosa is commonly used to revegetate wetlands but can also be used around pond edges, alongside streams, or in boggy areas.

Baumea rubiginosa plants growing in mud.
Baumea rubiginosa plants growing in water.

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Suited to regions:All regions
Plant type:Grasses
Height:1.00 m
Spread:1.50 m
Flowering time:Summer
Tolerances:Coastal, Hardy, Wet, Wind
Garden uses:Borders, Living areas, Paths & Steps, Ponds, Pool areas
Garden styles:Alpine, Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern, Native, Riparian
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known as
Sku10021

How to grow Baumea rubiginosa

Baumea rubiginosa thrives best in consistently moist or wet soils and prefers full sun to partial shade. It is ideal for planting around ponds, wetlands, drainage areas, or rain gardens. Select a site that remains damp year-round and avoid dry, exposed areas. Space plants 40-60 cm apart for adequate coverage. Water regularly both during establishment and in dry spells. It tolerates seasonal flooding and poor soils, making it perfect for stabilising wetland margins or erosion-prone zones.

Baumea rubiginosa (Orange Nutsedge) size, spacing, and growth rate

Baumea rubiginosa (Orange Nutsedge) typically reaches about 1 m tall and 1.5 m wide in suitable conditions. Allow about 1.5 m 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.

Baumea rubiginosa (Orange Nutsedge) Care

Orange Nutsedge thrives in full sun to part shade and prefers consistently damp to waterlogged soils. This hardy plant can tolerate shallow water (up to 30 cm deep) and occasional flooding. Regular watering is essential during establishment, especially when plants are planted in drier soils. Prune dead or damaged stems in late winter or early spring to maintain a neat appearance and encourage new growth. It rarely needs fertilising but may benefit from a slow-release fertiliser in nutrient-poor sites. Baumea rubiginosa is frost-hardy and excellent for erosion control, habitat creation, and naturalistic landscaping around water features.

Landscaping uses for Baumea rubiginosa (Orange Nutsedge)

Use Baumea rubiginosa (Orange Nutsedge) for moist borders, water feature margins, and textured group planting. Baumea rubiginosa (Orange Nutsedge) is commonly used to revegetate wetlands but can also be used around pond edges, alongside streams, or in boggy areas. 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.

Why buy Baumea rubiginosa (Orange Nutsedge) from The Plant Company?

Buy Baumea rubiginosa (Orange Nutsedge) 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 moist 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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