No, we are not referring to Attila the Hun or Hagar the Horrible. In scientific context, invaders are plants or animals whose introduction by humans to a new environment allows them to displace native species and change the ecology of that area.
One particularly successful plant invader is bush honeysuckle. It forms a dense understory in many of our local forests. It borders roadways — Ladue Road being a good example — and it finds its way into many of our backyards and gardens. Its red berries taste good to birds, so seeds are readily spread into new territory.
Conservationists and environmentalists have been concerned about honeysuckle’s dominance for a long time, but many of us have not felt threatened by the pretty bush.