A Self Sufficient Plant

Cactus are the epitome of self sufficiency. All they require is some sunlight and a little bit of water. They grow on gravel, rocks, dirt, almost anything in the desert. Surprisingly, they do adapt to a very narrow niche however. If you try to transplant a cactus from one country to another, they do need approximately the same conditions they had originally. So they do have limited adaptability. But once they are established and growing, they need almost no attention at all. No pruning, no fertilizing, nothing but a little water and sometimes some shade.