African feather grass

Common name:  African feather grass
Scientific name:  Cenchrus macrourus
Management programme:  Exclusion

Report this pest!

If you think you have seen this pest, we need to know. Please report it.

Why is it a pest?

African feather grass produces large amounts of seeds that are easily spread by wind and water. These seeds have barbed bristles that can catch in animal hair and clothing. It also spreads through rhizomes (underground fleshy stems) when they are moved by machinery, cultivation, or dumped plant material and soil. It can quickly crowd out other low-growing plant species and impact our production and economic values. 
 
In Otago, there is one known site with African feather grass — this is in coastal North Otago. As African feather grass is an exclusion species, this site will be subject to a rigorous incursion response process led by ORC.

What does it look like?

  • Size: African feather grass looks like any tussocky grass and forms thick clumps up to 2 metres high. 
  • Leaves: Whitish green on top, ribbed, and dark green underneath. The leaf edges feel rough when touched, and the casing is covered in hairs. 
  • Flowers/seeds: The flowers form a long, thin, straw-yellow colour spike, sometimes with a purplish tinge. The seeds have bristles that allow them to become easily attached to clothing, animal hair or wool. 
  • Root system: African feather grass produces lengthy, fibre-like roots and stems that will form new shoots. 
  • Habitat: Includes open areas, shrubland, grassland, coastal areas, cliffs, riparian margins, gravel beds, wasteland, and roadsides. 

When can I spot it best?

As its flower is quite distinctive, it’s easiest to spot when in bloom from December to April.

What are the rules?

To prevent the establishment of African feather grass in Otago and its negative environmental and economic effects, African feather grass is in the exclusion programme of the Otago Regional Pest Management Plan (2019-2029). 

All Cenchrus species, including African feather grass are declared unwanted organisms in the National Pest Plant Accord (NPPA).  Any species declared a pest under the NPPA cannot be sold or be in a place where plants are being sold. Pest plants cannot be propagated, bred, multiplied, communicated, released, caused to be released, or otherwise spread.

What should I do?

Do not attempt to undertake control of African feather grass yourself. Report any sightings to Otago Regional Council.

Report this pest!

If you think you have seen this pest, we need to know. Please report it.

Management programme

African Feather Grass R Pest Fact Sheets A4 Oct 2025 Cover Page 1
Factsheet - African feather grass (pest)

April 2026

PDF | 2 MB

African feather grass produces large amounts of seeds, which are easily spread by wind and can be carried on clothing. The plant can spread quickly, crowding out other low-growing plant species. It can also impact our production and economic values.

Cover African Feather Grass Powerpoint – Herbert Community Meeting AFG 230426
African feather grass powerpoint – Herbert Community Meeting

April 2026

PDF | 5 MB

Slides from a community meeting held April 2026. Topics covered an overview of African feather grass, why it is an issue/pest, what it looks like, the ORC response, and what the community should I do.

African feather grass response plan

April 2026

PDF | 105 KB

Otago Regional Council (ORC) is responding to the detection of African feather grass (Cenchrus macrourus, also known as Cenchrus caudatus) at a single, localised site in Coastal North Otago: Wainakarua. This document provides an overview of what African feather grass is, why ORC is responding, what is currently known about the situation, how control will be managed, and how the public can help support biosecurity efforts.

Cover Orc Regional Pest Management Plan 2019 29 Final Corrected 21
Otago Regional Pest Management Plan 2019

November 2019

Otago Regional Council

ISBN 978-0-908324-57-6

PDF | 5 MB

The Otago Regional Pest Management Plan focuses on dealing with harmful pests that impact our environment, economy, and communities. It identifies species like rabbits, wallabies, gorse, and wilding conifers that cause problems on our land. Guided by the Biosecurity Act 1993, the plan works with stakeholders to set rules and controls for managing pests. Through consultation, it aims to protect our region's unique ecosystems and species from the damage caused by these invasive organisms.