An edible park is the first phase of the project and will include an orchard and herb and vegetable beds.
The next phase will include a local food information centre and a cafe where the food will be made with ingredients from the garden.
The urban edible park will grow 2 tonnes of food a year and be able to provide a bag of vegetables to over 100 families a week.
The project's coordinator Chloe Waretini said the idea for the orchard arose after the Christchurch earthquake.
Waretini said people realised supermarkets carry only three days of food. If a disaster happened that disrupted food coming into the city, there would be hardly any available for residents.
She said there was a strong movement for Christchurch to grow more of its own food in the city.
Waretini said there was no reason Christchurch could not be self-sufficient.
"Christchurch has space and natural resources to grow all of the food to serve the people who live here. There are hardly any cities that can do that. It's a real huge opportunity."