Here are a list of interesting sites that you may find helpful : learn about food forests, ecological and permaculture:
The Kaiapoi Food forest trust donated 2 black boy peach trees to this project which aim to build community around the creation of a comprehensive community food hub in Roimata/Woolston…. https://www.facebook.com/roimatafoodcommons/
https://www.stuff.co.nz/the-press/christchurch-life/95662680/roimata-food-commons-the-very-first-step-in-creating-a-food-system-for-christchurchs-radley-park
Some wonderful ideas for the food forest
This site will give you everything you need to start your own food forest
The raised mounds may work for the likes of growing kumara this far south..we shall try and see if it works
http://www.ediblebackyard.co.nz/comfrey-planting-time-is-here-how-to-plan-plant-and-harvest/
Kath from Edible gardens is amazing… she has lots of wonderful videos on youtube about gardening… well worth a look