Houttuynia cordata (shrub)

Ecology Distribution Management Info Impact Info References and Links Contacts

Management Information Physical: The Environment Bay of Plenty (2003) suggests manually removing as much of the roots and plant material as possible and carrying out repeated removals at regular intervals. All uprooted plant material should be disposed of by incineration or taken to an official transfer station or landfill site. Chemical: Both the Environment Bay of Plenty (2003) and the National Pest Plant Accord (2001) report that certain herbicides may be used to control H. cordata but neither source details which herbicides to use for reasons that it is mostly a garden weed currently and extra caution must be used when applying herbicides in garden environment. If herbicide use are desired it is best to contact local authorities for further assistance and information.              Location Specific Management Information Auckland Region (North Island) H. cordata has been designated as a Total Control and Surveillance Pest by the Auckland Regional Pest Management Pest Management Strategy 2002-2007. Please see Hierarchy of Plant Designations for an explanation of designation terminology. Canterbury Region (South Island) H. cordata is designated as an "Unwanted Organism" by Environment Canterbury. Please see the Pest management strategy Part II 3.1 for defintions of classification of pests. New Zealand H. cordata is included in the First Schedule of the National Pest Plant Accord. All plants on the list are designated as Unwanted Organisms, and are banned from sale, propagation and distribution throughout New Zealand. Please see National Pest Plant Accord for the complete list.          Management Resources/Links 1. Environment Bay of Plenty. 2003. Pest Plant Control "15": Sustainable Options: Ground Cover - Pest Plants. Environment Bay of Plenty Regional Council Pest Plant Section. 2. National Pest Plant Accord, 2001. Biosecurity New Zealand.         Summary: The National Pest Plant Accord is a cooperative agreement between regional councils and government departments with biosecurity responsibilities. Under the accord, regional councils will undertake surveillance to prevent the commercial sale and/or distribution of an agreed list of pest plants. Available from: http://www.biosecurity.govt.nz/pests-diseases/plants/accord.htm [Accessed 11 August 2005] 3. Royal New Zealand Institute of Horticulture (RNZIH), 2005. Chameleon plant Houttuynia cordata         Summary: Available from: http://www.rnzih.org.nz/pages/nppa_023.pdf [Accessed 1 October 2005]          Results Page: 1