Interesting article @molometer but sad to read. Reminds of our poor native bluebells trying to survive against the Spanish invader and the grey squirrel invasion. 😢
I didn't realise that Leylandii were an engineered hybrid. It's amazing what you can learn on Steemit!
Thanks largely to the Victorians, we have a lot of invasive species as you have mentioned.
The Red squirrel is now virtually gone and is restricted to Scotland.