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Scirpus polystachyus

Scirpus polystachyus is a tough New Zealand native sedge commonly found in wetlands, swamps, and along stream margins. This perennial is valued for its resilience, dense growth habit, and ability to stabilise soil in damp environments. It plays an important role in riparian restoration and provides excellent habitat for native wildlife, making it a key species for eco-friendly landscapes.

Scirpus polystachyus grass with seed heads.

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Suited to regions:All regions
Plant type:Grasses
Height:40 cm
Spread:50 cm
Flowering time:
Tolerances:Coastal, Hardy, Wind
Garden uses:Borders, Paths & Steps, Ponds
Garden styles:Alpine, Backyard, City & Courtyard, Coastal, Frontyard, Modern, Native, Riparian
Easy to grow?Yes
Maintenance requirementsLow
Growth rateMedium
Also known as
Sku10231

How to grow Scirpus polystachyus in NZ

Growing Scirpus polystachyus in New Zealand is straightforward, as it thrives in consistently moist or waterlogged soils. It prefers full sun but will also tolerate partial shade. Plant in riparian zones, wetlands, or pond margins for best results. Once established, it spreads steadily to form dense clumps that provide soil stability and improve water quality.

Scirpus polystachyus care tips

Caring for Scirpus polystachyus is easy, as it requires very little maintenance. Remove dead or older foliage occasionally to encourage fresh growth. Fertiliser is not usually necessary, though mulching during establishment can help reduce weed competition. This sedge is highly resilient and thrives with minimal attention once established.

Scirpus polystachyus size, spacing, and growth rate

Scirpus polystachyus typically grows 60 to 100 cm tall and 40 to 70 cm wide, forming robust clumps. For restoration projects or mass planting, space plants 50 to 70 cm apart. The growth rate is moderate to fast, with plants establishing quickly in damp environments and providing long term coverage.

Landscaping uses for Scirpus polystachyus

Scirpus polystachyus is widely used in landscaping and restoration for its resilience and ecological benefits. It is ideal for riparian plantings, erosion control, and wetland restoration. In naturalistic garden settings, it adds texture and vertical structure around ponds, water features, or damp areas. Its ability to thrive in wet soils makes it an essential species for sustainable landscapes.

Why buy Scirpus polystachyus from The Plant Company?

Purchasing Scirpus polystachyus from The Plant Company ensures you receive high quality, nursery grown plants suited to New Zealand conditions. As NZ’s most trusted plant nursery, we provide strong, healthy sedges that establish quickly and thrive long term. Customers value our expert advice, careful packaging, and fast nationwide delivery. When you buy from The Plant Company, you can be confident your Scirpus polystachyus will perform reliably and bring lasting ecological and landscaping benefits.

Questions and Answers

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