Thatching reed: declared pest

Page last updated: Wednesday, 20 May 2020 - 9:47am

Please note: This content may be out of date and is currently under review.

Thatching reed, dekreiet, albertina thatching reed (Thamnochortus insignisis a declared pest in Western Australia (WA). This article describes the nature of the plant with links to requirements land owners/occupiers must adhere to and pest control methods.

Form: grass perennial

Status: not present in WA

Thatching reed is native to South Africa.  A very resilient plant that will tolerate drought (once established), frost and coastal seaside conditions. Although it prefers acidic soil it will grow in almost any soil as long as it drains well.


Thatching reed is a tall, grass or reed-like tussock with a diameter of 0.5-1 metre at the base and a spread.

Stems: Dark-green stiff upright stems forming a fan shape.

Flowers: Stems are topped with brown to golden brush-like flowers in summer.

Seeds: The seed comes in the form of a tiny nutlet inside the old flower, which forms two small wings when mature and allowing wind dispersion. The seeds are produced in very large quantities by each female plant, but are not all viable; a large number of nutlets are empty inside.

Agriculture and economic impact

Could invade crops and pastures where it would be difficult to control. Likely to invade wetlands. 

Declared pest category

The Western Australian Organism List (WAOL) contains information on the area(s) in which this pest is declared and the control and keeping categories to which it has been assigned in Western Australia (WA). Search for thatching reed in the WAOL using the scientific name Thamnochortus insignis.

Requirements for land owners/occupiers and other persons

Requirements for land owners/occupiers and other persons if this pest is found can be sourced through the declared plant requirements link.

Search > detect > report

MyPestGuide™ Reporter
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(Select 'Send report to MyWeedWatcher' from menu)

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080

Control method

There is no information on control, although glyphosate would be a good option.

Contact information

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080
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