Did you know it is illegal to buy, sell and propagate some plants under the National Pest Plant Accord (NPPA)?
The NPPA is designed to prevent the sale, distribution and propagation of a set list of pest plants (the Accord list) within New Zealand. These plants are deemed unwanted organisms under the Biosecurity Act 1993 and therefore illegal to be distributed or sold in New Zealand. It focuses primarily on pest plants that are spread significantly by casual and formal horticultural trade.
If a NPPA plant is present in yor garden you are not required to remove it but it is illegal to propagate or move this plant from your garden.
More information on these banned plants can be found here.