Yam daisies or murnong are really delicious bush tucker - a root vegetable that tastes like a pre-salted chip! The good news doesn't end there - they're also really good for you. But while once common around Canberra, they're pretty hard to find in the wild now.
But you can grow them in your own garden - specialist nurseries sell them and you can buy seeds online (albeit for a small fortune). They're actually not all that hard to grow, though I have learned the hard way that they do have some particular requirements.
Here are some lessons from my experience growing them for a couple of years.