How to kill marshmallow

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

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Weedsheet

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Corteva Website
Woody Weed Control Guide
Weed Identification

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.

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 application	Rate*	State
Starane^® Advanced Herbicide	Foliar spray	300 mL/100 L of water	All
Trezac^® Arylex^® active Herbicide	Foliar spray	200 mL + 300 mL Starane^® Advanced/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.

Product	Sep	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug
Starane^® Advanced Herbicide

Key:

Best time to spray/treat

Can spray/treat if conditions are suitable

Do not spray/treat