Yes you can grow the ones you find in a super market, just leave on the bench to shoot like a normal potatoe. There are the yellow flesh and the white flesh with a purple skin and the white flesh and white skin I have them in now and we are coming up to the end of summer and going into Autumn. they have gone mad, now that the tmperature has dropped we had hot dry conditions but have just had rain and had 33 mm so everything is coming up green, it might be an early break for the farming community. Have to see what else nature throws at us. Need a good year, as we only got a 5 bag wheat crop this eyar and that is just not enough for our return. grain prices have gone through the roof along with every think else, so here on the farm we are now growing all our own vegies, including sweet potato.
You can grow garlic off the shelf also and onions if they are left to shoot, along with pineapples......... when you have cut the top off them plant the top in the ground.( not too deep) It will produce another plant and another pineapple. You can plant the choko see also and get it going, seeds out of the fruit you buy. allow such things as sweet corn to dry out and plant this should germinate in the ground as well. There are heaps of things you can do to aid and increase what you have in the vegie patch.