How to kill marshmallow

Access all the information needed for control of this noxious weed, including weed identification, herbicide application and spray timings.


Description

Marshmallow description

Marshmallow identification

Marshmallow is a semi upright weed that becomes more erect as it matures. It is characterised by rounded, wrinkled leaves with prominent veins, each consisting of 5–7 toothed sections. The plant stems are covered in stiff hairs, and produce pale pink or white flowers with five petals each, growing in small clusters in leaf forks or on the stalks.

Marshmallow control

How to kill marshmallow

Marshmallow can be physically removed in small patches, especially when the plant is young and has a shallow root system. It is recommended for well-established or extensive infestations: Starane Advanced used at 3 mL/1 L of water or Hotshot used at 7 mL/1 L of water.

Cultivation is an effective control method for small to medium sized infestations; however, this process is less economic for large or well-established infestations.

Herbicides for killing marshmallow

Product#Method of applicationRate*State
Starane® Advanced Herbicide Foliar spray 300 mL/100 L of water All
Hotshot® Herbicide Foliar spray 700 mL/100 L of water All

# Note: Preferred product option in bold.  * Consult label for details of growth stage and use, especially where range of rates is given.

Treatment timing

Timing to kill marshmallow

For best results, ensure you treat when marshmallow is actively growing. This will ensure maximum uptake of the chemical into the root system.

ProductSepOctNovDecJanFebMarAprMayJunJulAug
Starane® Advanced Herbicide
Hotshot® Herbicide
Key: Best time to spray/treat Can spray/treat if conditions are suitable Do not spray/treat
Woody Weed Specialist