Don't try to scattergun me. In fact, I happen to be a scientist with a degree in botany and plant technology. When I spoke of evidence it was in relation to evolution, which you clearly haven't got the the faintest understanding of. My opinions as to what people should plant in their gardens is an entirely separate issue. Yes I know that accidental introductions have caused problems, but most of those problems have not been caused by gardeners planting ornamentals and you know it. You have a history of xenophobia in relation to flora, fauna and non-native human beings, and you are a misogynist when it comes to women in sport, according to your online burblings. I think that you and I would be far better off not engaging. That's what I'm going to do, though I do reserve the right to take you on over silly remarks. Thank you and goodnight.