Dock
Dock (Rumex obtusifolius) is a relatively common tap-rooted weed that in found throughout New Zealand, however because of its size it
Problem Overview
Dock (Rumex obtusifolius) is a relatively common tap-rooted weed that in found throughout New Zealand, however because of its size it is not common on lawns. Closely related species such as fiddle dock (Rumex pulcher) and sheep’s sorrel (Rumex acetosella) are likely to be more common in lawns. It has very large (up to 250mm long) wide, erect, round tipped leaved that are bright green in colouration.
Solutions
All turf types: Dock is controlled using a selective herbicide such as 2,4D & Dicamba (Banvine) applied at label rates. It is preferable to apply these products from September until May when the plants are actively growing.
Fine turf species will also be affected if these products are applied to lawns that are suffering from heat stress or moisture stress. In these circumstances it is advisable to apply fertilizer and irrigate for 7 - 10 days prior to application to ensure that the lawn is in a healthy state prior to spraying.
Other Similar Lawn Problems

Cape Daisy
Cape Daisy (Arctotheca calendula) is also known as Cape Weed. As depicted in the photograph above, it has short thick

Hawksbeard
Many lawns become yellow over summer due to mass of yellow flowers appearing from weeds commonly referred to as dandelions.

Couch grass
Couchgrass (Cynodon dactylon) is a warm season creeping grass that is sometimes referred to as twitch or Indian doab.
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