Members of an environmental programme are encouraging tangata whenua, marae and businesses to go "plastic free" for the month.
The Marae Para Kore, or zero waste network, has launched a competition which will run throughout July - designated by a campaign group as a plastic-free July month.
The competition will see groups collect as much discarded plastic as they can, and whichever collects the most will be able to donate the prize money to a marae of their choice.
Para Kore waste advisor Emily Bailey said going plastic-free for the month might transform into a long term habit that would stop tonnes of unnecessary waste being dumped.