White sweetclover was introduced to Alaska as a roadside fix in 1916; it escaped into river floodplains where native seedling mortality was 50% higher
Alaska likely planted white sweetclover along roads in 1916. It spread to river floodplains, where a study found native seedling deaths about 50% higher.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.