Also, on the West Coast, Blackberries from the himalayas cover the roadside. I LOVE the berries. But they are invasive, so what to do? Kill the useless things and keep the tasty ones? I am secretly grateful to whoever brought them... but Scotch Broom? I don't care for it, but it fixes nitrogen into soil that must need it... otherwise it might be too rich / support other species that could succeed it. Just depends where you are coming from. Turkey tail grow EVERYWHERE, but I wonder if that was always the case.