The event is part of Heritage Month, and all are welcome to come. Devonshire teas and lunch will be available at the homestead, or people can bring a picnic.
They will be offered guided walks through the protected forest and wetland, where they can see endangered birds. Or they can tour the Heritage New Zealand Category 1 listed homestead.
It's an exciting time for the place, Bushy Park Trust chairman Kevin Ross said. He's grateful to everyone who has worked toward it.
The sanctuary has an army of volunteers, and more individuals and businesses are welcome to join. It has been a special focus for the Rotary Club of Whanganui North.
The addition to its name comes from its closer relationship with local iwi Ngā Rauru Kiitahi - iwi members Alex McLeod and Leaara Kauika-Stevens are now on its board.
Trustee Nicola Patrick thinks the addition to the name will go down well.
"I think people are really embracing te reo. People welcome knowing these places' full history, and they value the traditions behind them."
Bushy Park Tarapuruhi is 25km from Whanganui on Rangitatau East Rd. Its 98ha predator-fenced forest is open during daylight hours, and free to visit. Its homestead is open 10am to 4pm from Tuesday to Sunday, and can be toured for a donation.