Grass-roots community organisation that aims to improve the natural condition of the Derwent catchment



The following information is drawn from the NRM South and Southern Tasmanian Councils Authority book 'Weeds of Southern Tasmania', 'Agro-ecology of Malva parviflora (small-flowered mallow) in the mediterranean-climate agricultural region of Western Australia by P.J.Micheals and 'Mallows Integrated Pest Management for Home Gardeners and Landscape Professionals' by the University of California and is intended only as a guide to dealing with Mallow infestation. For more information contact Biosecurity Tasmania Phone: 03 6165 3777 Email:

Non-chemical control

Physical removal

  • Mallows are best controlled mechanically by hoeing or pulling out young plants.
  • Young Mallow can also be killed by cutting them off at the crown, but older plants may resprout from the crown.
  • If there are a large number of plants, shallow mechanical cultivation may be used when the plants are young. The cultivator should be set so that the blades or tines will pull the plants from the ground or cut the tap root below the soil level.
  • Mowing is not an effective method of control because the plants have viable buds on the stems below the height of the mower blade.
  • Common Mallow tends to have a more prostrate growth habit so that species is even less affected by mowing.

Cultural control

  • Cultural control can be done by planting competitive desirable plants in areas where Mallow is a problem. The shade provided by these plants will reduce germination and growth of Mallow seedlings.

Grazing control

  • The digestion of the Mallow seeds by livestock before the seeds have matured (and become impermeable) is very efficient in destroying seed viability.
  • It is important to restrict the movement of sheep for more than 8 days to prevent spread across the farming system.

Chemical control

Application method

1. Cut and paint

  • Stage of growth - mature plants
  • Suggested herbicide -  Mallow are resistant to Glyphosate Contact DPIPWE on 03 6165 3777 Email: for information on suggested herbicides

Derwent Catchment Project

PO Box 22 Hamilton TAS 7140  |  Phone (03) 6286 3211  |