The Jerusalem Artichoke: (via Wikipedia)
also called the sunroot, sunchoke, earth apple or topinambour, is a species of sunflower native to eastern North America, and found from eastern Canada and Maine west to North Dakota, and south to northern Florida and Texas. It is also cultivated widely across the temperate zone for its tuber, which is used as a root vegetable.
The point about them is they really are a slacker vegetable. Because you do nothing with them whatsoever. You don’t have to feed them, water them (unless drought). The harvest is large and they don’t take up much room in your garden. They patiently grow in the back of the garden, minding their own business. Apparently they attract butterflies.
They are called fartichokes because they have the property of generating lots of gas. But there are ways around this effect. Watch the video to find out how.