Toetoe (Austroderia richardii) showing its magnificent tall plumes and commanding presence in wetland environments

Toetoe

Austroderia richardii

Not Threatened

Toetoe, also known as "cutty grass" due to its sharp-edged leaves, is New Zealand's most majestic native grass, forming commanding clumps that can reach 3 meters tall when in flower with spectacular arching, silvery-cream plumes that dance gracefully in the wind. This iconic South Island endemic, recently reclassified from Cortaderia to Austroderia richardii, creates dramatic displays along stream banks, wetlands, and coastal dunes with its pennant-shaped drooping inflorescences that stretch 30-60cm long. Named after French botanist Achille Richard, it holds deep cultural significance as the child of gods Tāne Mahuta and Ngaore in Māori tradition, and serves as a cornerstone species in New Zealand's wetland ecosystems while providing spectacular ornamental value in large-scale landscaping. native grasses

Toetoe (Austroderia richardii) showing its magnificent tall plumes and commanding presence in wetland environments

Image credit: Toetoe (Austroderia richardii). Wikipedia

Quick Facts

Quick Facts Overview

Scientific NameAustroderia richardii (formerly Cortaderia richardii)
Height1.5-3.0 meters (when flowering)
Spread1.5-2.0 meters
Water NeedsModerate to high (wetland native)
LightFull sun preferred
Frost ToleranceGood (frost-prone regions)
Salt ToleranceExcellent (coastal dune native)
Growth RateModerate to fast
LifespanLong-lived perennial

Climate Best Suited to

Toetoe is exceptionally adaptable throughout New Zealand, thriving from coastal to subalpine areas. It performs best in temperate climates with reliable moisture but demonstrates remarkable tolerance to diverse conditions including drought, frost, and coastal exposure.

Regional Suitability

CityClimate Suitability
WhangāreiIdeal
AucklandIdeal
HamiltonIdeal
TaurangaIdeal
RotoruaIdeal
GisborneIdeal
New PlymouthIdeal
NapierIdeal
WhanganuiIdeal
Palmerston NorthIdeal
WellingtonIdeal
NelsonIdeal
ChristchurchIdeal
DunedinIdeal
InvercargillIdeal

Growing Requirements

Soil Requirements

Toetoe is remarkably adaptable to soil conditions:

  • Prefers moist, free-draining soils
  • Tolerates very poor soils including coastal sand
  • Adapts to clay, loam, or sandy substrates
  • Excellent for wetland margins and boggy conditions
  • Thrives in both fertile and nutrient-poor soils

Light Requirements

Performs best in bright conditions:

  • Full sun preferred for optimal growth and flowering
  • Tolerates partial shade but may reduce flowering
  • Excellent for exposed, windy coastal locations
  • Thrives in open wetland and grassland situations

Water Requirements

Adaptable water needs:

  • Naturally suited to moist or wet conditions
  • Tolerates periods of dryness once established
  • Excellent for stream banks and pond margins
  • Can handle both waterlogged and dry periods
  • Benefits from consistent moisture during establishment

Uses & Significance

Landscape & Restoration Uses

  • Feature grass for large spaces and wetland margins
  • Erosion control and bank stabilisation along waterways
  • Wind‑tolerant matrix in coastal and open sites
  • Wildlife shelter and nesting material provider

Seasonal Care Calendar

Spring

  • New growth emerges with vigor
  • Best time for planting and establishment
  • Flowering begins (September onwards)
  • Remove any winter-damaged foliage

Summer

  • Peak flowering with spectacular plume display
  • Tall, graceful plumes reach full development
  • Silvery-cream inflorescences at their most beautiful
  • Active growing season with lush foliage

Autumn

  • Seed development and natural wind dispersal
  • Plumes remain attractive as they mature
  • Good time for seed collection
  • Natural seeding occurs in suitable sites

Winter

  • Evergreen foliage provides year-round structure
  • Frost-hardy requiring minimal protection
  • Plumes may persist through winter adding interest
  • Slower growth but retains attractive form

When to Prune and How Much

When to Prune and How Much Overview

Toetoe requires minimal maintenance:

  • Remove dead or damaged leaves at any time
  • Cut back old flower heads after seeding if desired
  • Can be cut back by one-third in early spring for rejuvenation
  • Generally best left unpruned to showcase natural majesty
  • Division possible but challenging due to large size

The spectacular plumes are the main attraction, so avoid heavy pruning during the flowering display period. Handle with care due to sharp leaf edges.

Planting Guide

When to Plant

The best time to plant Toetoe is during spring when soil temperatures are warming and plants can establish before the growing season.

Site Selection

Choose a site with:

  • Full sun exposure
  • Moist, free-draining soil (wetland conditions ideal)
  • Ample space for large mature size (2m x 3m)
  • Protection from strong winds for young plants
  • Access to water during dry periods

Planting Procedure

  1. Space plants 1.5-2 meters apart for full development
  2. Dig a large hole twice the width of the root ball
  3. Incorporate organic matter into heavy soils
  4. Position the plant at the same level it was growing
  5. Backfill with amended soil, firming gently
  6. Water thoroughly after planting
  7. Apply organic mulch around the base

Initial Care

Water regularly during the first two growing seasons to establish the extensive root system. Once established, this hardy grass requires minimal care.

Propagation Methods

From Seed

Growing Toetoe from seed requires stratification:

  1. Collect fresh seed when plumes are fully mature
  2. Soak seeds in water overnight
  3. Drain and keep moist in refrigerator for 4 weeks (cold stratification)
  4. Sow in seed-raising mix after chilling period
  5. Keep consistently moist during germination
  6. Transplant seedlings when large enough to handle

From Division

Division is possible but challenging:

  1. Divide large clumps in early spring
  2. Use sharp spade to cut through tough root system
  3. Ensure each division has roots and growing points
  4. Handle with care due to sharp leaf edges
  5. Replant immediately with adequate spacing
  6. Water well and maintain moisture until established

Natural Establishment

Toetoe readily naturalizes in suitable habitats through wind-dispersed seed, often establishing new colonies along waterways and coastal areas.

Cultural History

Toetoe (Austroderia richardii) represents both the botanical heritage of New Zealand and the deep spiritual connections within Māori culture:

Māori Cultural Heritage

  • Sacred Origins: In Māori tradition, toetoe is the child of Tāne Mahuta (god of forests) and Ngaore
  • Name Meaning: "Toetoe" literally means to shred or divide, reflecting its use in traditional crafts
  • Spiritual Significance: Associated with tohunga (spiritual experts) rituals and students
  • Mourning Ceremonies: Important plant in traditional mourning and remembrance practices

Scientific Recognition

  • Named Honor: Species dedicated to Achille Richard (1794-1852), French botanist who described numerous New Zealand plants
  • Taxonomic Evolution: Recently reclassified from Cortaderia to Austroderia in 2011
  • Type Species: Designated as the type species for the genus Austroderia
  • Endemic Status: Unique to New Zealand, primarily South Island distribution

Ecological Importance

  • Wetland Keystone: Fundamental species in New Zealand's wetland ecosystems
  • Habitat Creator: Provides structure and shelter for numerous native species
  • Adaptive Success: Thrives from coastal dunes to subalpine environments
  • Pioneer Species: Often first to colonize disturbed wetland sites

Contemporary Recognition

Today, Toetoe stands as an icon of New Zealand's natural heritage, representing the successful conservation of native species while serving practical roles in large-scale landscaping, wetland restoration, and cultural preservation.

Pests & Diseases

Generally Robust

  • Natural Hardiness: Very tough and resistant to most problems
  • Adapted Constitution: Well-evolved for New Zealand conditions
  • Low Maintenance: Rarely requires pest or disease management

Potential Issues

  • Crown Rot: Can occur in poorly-drained soils despite wetland tolerance
  • Aphids: Occasionally affected by aphids on new growth
  • Fungal Problems: May develop issues in very stagnant, poorly-ventilated sites

Confusion with Pampas Grass

  • Identification: Often confused with introduced pampas grass (Cortaderia selloana)
  • Key Differences: Toetoe has drooping plumes and stronger leaves with prominent veins
  • Conservation Value: Important to distinguish from invasive pampas grass

Management

Provide good air circulation and avoid waterlogged conditions. Handle with care due to sharp leaf edges. Most problems are environmental rather than pest-related.

Bonus Tip

Bonus Tip Overview

Plant Toetoe where its magnificent scale can be fully appreciated - alongside ponds, streams, or in large open spaces where the 3-meter flowering height creates maximum impact. The spectacular plumes are perfect for creating dramatic seasonal displays, and they move beautifully in wind, adding dynamic movement to the landscape. Space plants adequately (2m apart) to allow each specimen to develop its full commanding presence. Remember to distinguish it from invasive pampas grass - Toetoe has drooping, pennant-shaped plumes and stronger, multi-veined leaves. The sharp edges earn it the name "cutty grass," so handle with care during maintenance.

Cultural Significance

Cultural Significance Overview

Learn more about New Zealand's sacred plants in Cultural Treasures.

Plant Description

Plant Description Overview

Austroderia richardii (toetoe; formerly Cortaderia richardii) forms huge tussocks with arching, cutting‑edged leaves and large, drooping, silky flower plumes to 3 m. The pendant plumes and strong leaves distinguish it from upright, invasive pampas.

Natural Habitat

Natural Habitat Overview

Wetland edges, damp river flats, and seasonally moist hollows from coastal to subalpine zones, typically in free‑draining but moisture‑retentive, low‑nutrient soils with high light and airflow.

Plant Ecology

Plant Ecology Overview

Extensive roots bind soil and intercept runoff; large tussocks create cover for invertebrates and birds. Plumes produce abundant seed dispersed by wind along valleys and waterways.

Ecological Role

Ecological Role Overview

Structural keystone in wetland margins and open damp grasslands, adding height, movement, and year‑round habitat while stabilising fragile substrates.

Site Requirements

Site Requirements Overview

  • Light: Full sun for best plumes; tolerates light shade.
  • Soil: Moist, free‑draining loams; dislikes stagnant waterlogging.
  • Moisture: Moderate to high; irrigate in drought.
  • Exposure: Wind tolerant; good airflow reduces fungal issues.

Space 1.5–2 m apart for specimens. Water well during establishment; mulch to conserve moisture. Avoid high‑nitrogen fertiliser that produces weak, floppy growth.

Planting

Planting Overview

  1. Plant in autumn or spring into prepared, moist ground.
  2. Set at pot depth; firm and water thoroughly.
  3. Mulch 5–8 cm, keeping mulch clear of the crown and leaf bases.

Care and Maintenance

Care and Maintenance Overview

Comb out dead foliage in late winter using gloves; remove spent plumes. Irrigate during prolonged dry spells. Distinguish plants from pampas and control nearby pampas to prevent confusion.

Landscaping Uses

Landscaping Uses Overview

Magnificent beside ponds, swales, and in large meadows where plumes catch light and wind. Combine with toe‑toe species, sedges (Carex), and flaxes (Phormium).

Conservation

Conservation Overview

Not Threatened. Use eco‑sourced plants in restoration and maintain hydrology where possible; exclude stock from sensitive margins to encourage recruitment.

Cultural Section

Details

Toetoe (Austroderia richardii) holds profound cultural significance in traditional Māori society as one of the most versatile and essential construction materials in indigenous architecture and crafts, with the straight, light-colored stems (kākaho) serving as the primary material for lining inner walls, roofs, and partitions of whare (houses) and other buildings. The name "toetoe" derives from the Māori word meaning "to shred or divide," reflecting the plant's fundamental role in traditional material culture where its fibers were carefully processed and prepared for numerous applications that supported daily life and cultural practices.

The traditional uses of toetoe demonstrate sophisticated ethnobotanical knowledge that enabled Māori communities to transform this native grass into essential tools and structures. The long, flexible leaves were expertly woven into baskets, kites, mats, and roof thatching, while specialized applications included creating water-resistant containers for cooking food in hot springs, taking advantage of the plant's natural fiber properties. The distinctive flower stalks served multiple purposes, providing frames for traditional kites and being incorporated into tukutuku panelling, the intricate decorative panels that adorned meeting houses and other culturally significant buildings.

Beyond practical applications, toetoe held important spiritual and medicinal significance in traditional Māori culture, featuring in pūrākau (traditional stories) as the child of Tāne Mahuta and Ngaore, connecting the plant to fundamental creation narratives. In rongoā Māori (traditional medicine), the seed heads were used to stop bleeding from fresh wounds, while other medicinal applications included treatments for diarrhea, kidney complaints, and burns. The plant's association with tohunga rituals, students of traditional knowledge, and mourning ceremonies demonstrates its deep integration into Māori spiritual and cultural practices, making toetoe not simply a utilitarian resource but a sacred component of traditional Māori worldview and cultural identity.