OCA (Yams = Oxalis Tuberosa):
Pete & Rose Baldwin at the Waitutu Lodge (http://www.waitutu.co.nz/) were growing these prolifically in their vegie garden. I had never seen them before, but obviously they would grow equally well in Southern Vic. I will be planting some this year:
http://greenharvest.com.au/Plants/Information/Oca.html
PS: I did so and they grew prolifically. See: http://www.theultralighthiker.com/root-vegie-pots-no-dig-no-weed-growing/
