Canna lily (Canna indica)



Canna lily is regarded as an environmental weed in NSW and south eastern Queensland. It can form large dense clumps, particularly along waterways, and replaces native species. 


Canna lily speads by seed and vegetatively via its thick, branching rhizomes (underground stems). 


Canna lily has large, lush green leaves and bright flowers. It can vary in height, growing up to 2 m. 


Richardson FJ, Richardson RG and Shepherd RCH (2006). Weeds of the south-east an identification guide for Australia. RG and FJ Richardson, Melbourne.

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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.

PERMIT 9907 Expires 31/03/2020
Glyphosate 360 g/L (Roundup®)
Rate: 1 part glyphosate to 50 parts water
Comments: Spot spay. Apply as foliar application. Spray regrowth after slashing.
Withholding period: Nil.
Herbicide group: M, Inhibitors of EPSP synthase
Resistance risk: Moderate

Picloram 44.7 g/kg + Aminopyralid 4.47 g/L (Vigilant II ®)
Rate: Undiluted
Comments: Cut stump application. Apply a 3–5 mm layer of gel across the cut surface on the rhizome.
Withholding period: Nil.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate

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Legal requirements

Canna lily (Canna indica) is not declared in NSW under the Noxious Weeds Act 1993.

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Reviewed 2014