There isn't much that's real green along Lake Oahe in central South Dakota in late August. But the yucca plant seems to be well adapted to drought conditions and so in some places, that's all that is green.Sometimes, due to erosion along the shores of Oahe, you will see yucca clinging to soil cliffs and if you study them, you will see that they have roots that go down more than 10 feet. That's how they survive.Many South Dakotans have deep roots and that's how we hang on, as well.