In 1940s New Zealand, cordgrass was planted to reclaim wetlands for grazing; it spread across tidal mudflats, forcing decades of eradication work
In the 1940s, New Zealand planted cordgrass for pasture. It now damages the estuary mudflats birds rely on, and officials are still fighting it.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.