Oxalis debilis

Lilac oxalis

Other common names:

Pink shamrock, pink wool sorrel, purple oxalis.



Lilac oxalis can grow 10 cm to 15 cm tall. The weed has dark green heart shaped leaflets which can be 2 cm to 4.5 cm long. The funnel shaped pink or mauve flowers which are very distinct are borne in clusters of 2 to 6 flowers. The weed grows from underground bulbs and does not produce any fruit. Pink shamrock (Oxalis debilis var. corymbosa ) is regarded as a minor environmental weed in Queensland, and as a "sleeper weed" in other parts of Australia (Weeds of Australia, 2016).


Susceptible Turf:

Warm-and cool-season turf grass varieties.


Control options:

  • Pesticides: See available tabs below for registered products. Use as per label instructions.
  • Integrated Pest Management (IPM): Use a combination of approaches listed on this page.
  • Cultural: Nil.
  • Mechanical: Nil.



Weeds of Australia (2016). Oxalis debilis var. corymbosa, Biosecurity QLD Edition, Queensland Government (accessed 17 Feb 2019).



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Control Options

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