sentences:  The "Harper's Weekly" magazine (1895) printed an anecdotal account stating that a certain man from New Orleans collected and brought home water hyacinths he collected from Colombia, c. 1892, and the plant proliferated in a matter of 2 years.As the hyanciths multiply into mats, they eliminate the presence of fish, and choke waterways for boating and shipping.This effect was well taking hold in the state of Louisiana by the turn of the 20th century.