> It's daft to apply human politics to plants. It was just a joke. > Non-native plants are the ones that out-compete the local species. Usually, but not alwa

> It's daft to apply human politics to plants. It was just a joke. > Non-native plants are the ones that out-compete the local species. Usually, but not always. Some non-native species may increase diversity and some native species can turn invasive when the environment changes (usually due to the global warming).