Richard Collins: 'Alien invader' trees can learn to be good locals in most habitats

Imported, non-native species need not be a nuisance

Giant Sequoias, Switzerland: 40% of Geneva's trees are 'alien', but not damaging.

In his most recent book, Wild Woods, the Magic of Ireland’s Woodlands, ecologist Richard Nairn describes how he 're-wilded' a forest in County Wicklow. Meanwhile, wildlife artist Vincent Sheridan has been planting trees at his home  in Co Kildare. 

These 'ambassadors' for conservation don’t  moan about environmental degradation: They do something about it. The woodlands they are creating will endure.