Docks control

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

Weed Description

Description

Docks are exceedingly difficult to identify accurately in the vegetative (non-flowering) stage. Most species, including the commonly found curled dock, grow to around 1 m in height.

Docks are long-lived perennials and develop a deep taproot. They usually germinate in autumn and develop into rosettes through the winter. A flowering stem emerges in spring and the seed matures through summer. The stems usually die back during autumn and the plants over-winter as rosettes. The stems of the plant are relatively thick and hollow, usually hairless and somewhat fleshy in nature. The leaves of the plant vary in size depending on their position on the stem however they are usually arrow or heart shaped. The rosette (crown leaves at the base) are typically 20 – 25 cm long with a rounded tip and base, while further up the stem they reduce in size to become much shorter and narrower.

The flowers grow in clusters at the tip of the stem and are made up of three small petals each, growing on stalks typically around 5-6mm long, while the fruit is a small three-sided nut surrounded by three papery segments.

Weed Control

Docks control

Controlling Docks

The most effective means of controlling docks is to prevent infestations from establishing in the first place, as they are usually spread via human activities and machinery.
Small infestations can be removed physically from the soil, it is recommended to remove at least 20cm below the base of the plant.

Extensive infestations can be reduced in density using Starane™ Advanced Herbicide as a foliar spray used at 3mL/1L of water.

Herbicides for control of Docks

Product#
Method of application Rate* State
Statesman™ 720 Boom Application 2.78 L/ha SA
Stinger™ Herbicide Boom Application
20 g.ha + surfactant
NSW, SA, Tas, Vic, WA
Grazon™ Extra Herbicide
Foliar spray 350 or 500 mL/100 L of water All
Hotshot™ Herbicide Foliar spray 700 mL/100 L of water All
Starane™ Advanced Herbicide Foliar spray 300 mL/100 L of water All
Tordon™ 75-D Herbicide
Foliar spray 75 or 150 mL/ 100 mL/100 L of water NSW, Old, SA, Vic, WA
Vigilant™ II Herbicide Leafwiping Neat 50% leaf area 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

The optimal time to spray docks is before the flowering stem develops. This will minimise the herbicide required and prevent seeding.

PRODUCT Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Grazon Extra
Starane Advanced
Vigilant II
KEY
Best time to spray/treat
Can spray/treat
if conditions are suitable
Do not spray/treat