Cumbungi (Typha species)

Also known as: Bullrush

Cumbungi is an erect bullrush-type plant. Infestations occur in still or slow-moving bodies of fresh or brackish water, and impede water flows.


How does this weed affect you?

Three species of Typha occur in Australia. Two are native - narrow leaf cumbungi (Typha domingensis) and broadleaf cumbungi (Typha orientalis). One is an introduced European species (Typha latifolia). Infestations of cumbungi interfere with water flows in natural watercourses and drains, and can affect water quality and access to water. 


Department of Agriculture, Fisheries and Forestry, Biosecurity Queensland (2013) Factsheet Pest Plant PP43, Cumbungi

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Herbicide options

Users of agricultural or veterinary chemical products must always read the label and any permit, before using the product, and strictly comply with the directions on the label and the conditions of any permit. Users are not absolved from compliance with the directions on the label or the conditions of the permit by reason of any statement made or not made in this information. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website

See Using herbicides for more information.

2,2-DPA 740 g/kg (Propon®)
Rate: 1.0–2.0 kg per 100 L of water
Comments: Hand gun, spot spray application. For use in irrigation channels and bore drains.
Withholding period: 7 days for harvest; 2 days for grazing/foraging
Herbicide group: J, Inhibitors of fat synthesis (Not ACCase inhibitors)
Resistance risk: Moderate

Amitrole 250 g/L (Amitrole T® )
Rate: 2.3 L per 100 L of water
Comments: Spot spray application. Apply during flowering between January and May.
Withholding period: Nil.
Herbicide group: Q, Bleachers: Inhibitors of carotenoid biosynthesis unknown target
Resistance risk: Moderate

Glyphosate 360 g/L (Only products registered for aquatic use)
Rate: 13 mL per 1 L of water
Comments: Spot spray application. Apply to actively growing plants at early flowering.
Withholding period: Nil.
Herbicide group: M, Inhibitors of EPSP synthase
Resistance risk: Moderate

Imazapyr 250 g/L (Various products)
Rate: 3 L/Ha
Comments: Boom spray in irrigration channels and drains.
Withholding period:
Herbicide group: B, Inhibitors of acetolactate synthase (ALS inhibitors)
Resistance risk: High

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Biosecurity duty

The content provided here is for information purposes only and is taken from the Biosecurity Act 2015 and its subordinate legislation, and the Regional Strategic Weed Management Plans (published by each Local Land Services region in NSW). It describes the state and regional priorities for weeds in New South Wales, Australia.

Area Duty
All of NSW General Biosecurity Duty
All plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. Any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable.

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For technical advice and assistance with identification please contact your local council weeds officer.
For further information call the NSW DPI Biosecurity Helpline on 1800 680 244 or send an email to

Reviewed 2017