Volunteers have been helping the Conservation Department with building, weeding and cleaning in the lead-up to summer.
A group weeds and plants in the Gordon Park Scenic Reserve every fortnight, some Royal New Zealand Navy paddlers helped move a building, Friends of the Whanganui River gave John Coull Hut a spring clean and a team of builders have made a new deck for Trains Hut.
The Friends of Gordon Park Scenic Reserve have been working there for 11 years, chairman Colin Ogle said. Most of their work has been weeding.
But they have also collected seed and grown it on, with the help of schools. When the plants are big enough they are used to extend the forest out towards the reserve's current fenced boundaries.
The reserve contains two very threatened small native plants, Gratiola concinna and Mazus novae zelandiae, as well as other, larger, rare species. The group keeps them protected, and adds to them by planting into gaps in the forest.