Thirteen additional plants make list of banned species

26 July 2012

Under an agreement between government agencies, regional councils and the nursery industry, thirteen plants have been confirmed as pests and added to a list of species that are illegal to propagate, distribute or sell.

The agreement - the National Pest Plant Accord (NPPA) - was created in 2001 to help prevent the spread of invasive plant species through the nursery trade or casual trading.

Government agencies with biosecurity responsibilities (Ministry for Primary Industries – MPI, Department of Conservation and regional councils) and the Nursery and Garden Industry Association (NGIA) are all parties to the Accord. Plants of concern are identified by the parties, members of the public and a technical advisory group. Following consideration by a group of technical specialists, extensive discussion by a representative group of Accord members and public consultation, agreed species are added to the register.

All plants on the NPPA register are unwanted organisms under the Biosecurity Act 1993 and cannot be sold, distributed or actively propagated. Existing plants are, however, allowed on private properties. All listed plants are considered invasive species and threaten New Zealand’s existing plant life.

The plants recently added to the register are:

Scientific name Common name(s)
Asparagus plumosus asparagus fern
Carex pendula drooping sedge, Otahuna sedge
Cestrum aurantiacum orange cestrum
Cestrum elegans red cestrum
Cestrum fasciculatum red cestrum, early jessamine
Cestrum nocturnum queen of the night
Clerodendrum trichotomum clerodendrum
Juglans ailantifolia Japanese walnut
Kennedia rubicunda dusky coral pea, coral pea, running postman
Maytenus boaria Chilean mayten, mayten, maiten
Passiflora apetala bat-wing passion flower
Pithecoctenium crucigerum monkey’s comb, monkey’s hairbrush
Polypodium vulgare polypody, common polypody

All species in the NPPA species list, including the new additions, are in the 2012 NPPA manual which can be accessed online at

The updated manual will also be available in hard copy form from regional councils nationwide by the end of August 2012.

Since its establishment in 2001, the National Pest Plant Accord species list has been through two reviews, one in 2006 and another completed recently which began in 2011. The thirteen new additions were identified through this review.

A summary of submissions to the latest review is at:

Members of the public can make a submission to have plants considered for inclusion/exclusion on the Accord.

For further information, contact:

Lesley Patston, Ph 04 - 894-163 or 029 8940163
Or MPI Mediaphone 029 8940328


Last Updated: 30 July 2012

Contact MPI

for general enquiries phone

0800 00 83 33