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National pest plant programmes

National pest plant programmes

Updated 19 December 2017 12:32pm

Keeping our waterways safe

Like you, we know freshwater pest plants have the potential to cause enormous damage to our freshwater habitats and diminish our recreational opportunities.

Once established these pests are extremely difficult and costly to control.

But there are lots of ways we can all do our bit.

Here are some programmes helping keep our waterways safe and clean and making a difference.

Freshwater pest plants campaign 

Check, clean, dry (CCD) is a social marketing campaign established by the Ministry for Primary Industries (MPI) in 2005 to slow the spread of didymo and other freshwater pests.

The main focus of the campaign is to get waterway users like boaties, walkers and people fishing to check, clean and dry their equipment and clothing when they move between different waterways.

This avoids the accidental introduction of pests from  equipment into a waterway that does not contain the pests.

The Greater Wellington Regional Council (GWRC) manages the CCD campaign on behalf of MPI and each year has an advocate out and about educating the public about freshwater pests and the importance of CCD.

In addition to this we work closely with our North Island partners including Fish and Game, DOC and Horizons Regional Council

  • Check, clean and dry all boats and equipment between waterways. For details on the specific method for cleaning equipment see here
  • Do not move or release plants into waterways
  • Check out the Team Check, Clean, Dry facebook page and get involved!
  • Information for sporting event organisers can be found here
  • The latest Check, clean, dry pocket guide can be found here

The National Pest Plant Accord

The National Pest Plant Accord (NPPA) is a co-operative agreement between the Nursery and Garden Industry Association of NZ, regional councils and government departments with biosecurity responsibilities (primarily the Ministry of Primary Industries and the Department of Conservation).

Caption: Smilax infestation

The plants listed under the NPPA have been declared unwanted organisms under the Biosecurity Act 1993. This prevents their sale, propagation or distribution across the country.

Regional councils undertake surveillance to prevent the commercial sale and/or distribution of these plants.

GWRC biosecurity officers periodically inspect all plant outlets in the region to ensure that they are not selling any NPPA or species in the RPMS. In addition to this a selection of markets are inspected at random intervals.

A copy of the 2012 version of the NPPA can be downloaded here


Weedbusters is a national weeds awareness and education programme protecting New Zealand's environment from the increasing weed problem.

All of us play a large part in spreading environmental weeds, often without knowing it or meaning to do it.

Weedbusters aims to educate people and raise awareness to turn this problem around.

We support and participate in the Weedbusters programme.