Hi, Whenever anybody with a background in ecology is on our property, they're always pointing out 'dangerous' plants that they claim are destined to upset the local forest. Obviously, that threat is real. Here in NSW Australia, we have forest taken over by lantana, small-leaved privet, and others. But I also know these people are overly-alarmist, branding any non-native plant that grows or reproduces as dangerous. My questions for people with systems in place, like Geoff: "How do you deal with local ecologists, and what credence do you give any of their knowledge? Do you take any of their warnings or recommendations seriously? Have you had any plants escape into the local stable forests?