Year after year farmers in the US plants a lot of corn. A safe estimate is around 80 million acres with another 70 million acres or so going to soybeans. Corn comes from South America, soybeans are from East Asia. When we plant these crops we plant them in such a way that we exclude or, at the very least, limit the ability of native plants to grow. A safe estimate is that 99 percent of our cropland is planted in non-native species. I’d like to get your opinions on whether it’s OK for us to go to such efforts to control invasive species like kudzu and buckthorn when, on the flip side, we’re going to so much effort to encourage other species which don’t come from here.