Dieback. Four weeks ago the government was contemplating an inferno of ash trees from top to bottom and east to west of the UK. The press were talking up the enemy, Chalara fraxinea, as the mother of all fungi, a Milosevic-Saddam pathogen that had to be stopped in its tracks. The trouble was that no one knew how to target the offender. The next thought, it followed, was that we should eliminate all infected trees, not just saplings imported from Europe but mature ash in British forests. Maybe even healthy trees near infected ones: deny the predator the prey.

LRB 6 December 2012 | PDF Download