The punchbowl paddock is the next area to be planted.
Brooke said the wetland and homestead area was scheduled for planting next year.
Once the planting is completed, Brooke said the care and management of the newly planted seedlings will continue for several years and weed control in those areas was likely to be ongoing.
The extension of the sanctuary's plant nursery and construction of a shade house with raised benches for planting had also been completed.
Brooke said the construction of the nursery and shade house was necessary for the revegetation project.
"To progress to the scale of planting needed for this project, and to fully engage with volunteers safely and effectively, the small nursery needed extending, and a shade house and some raised benches were also required," she said.
Schools and volunteers had already begun using this space for potting plants.
Horizons Regional Council provided the funding for this construction project through the Kanorau Koiora Taketake Indigenous Biodiversity Community Grant, and the project was a collaboration between the council, Bushy Park Trust, Forest and Bird, and Ngā Rauru Kiitahi.