Trapa Natans family. It displaces all native

vegetation that stands in its way. The weed

can be found in ponds, shallow lakes, and

parts of rivers. It was brought over for human

consumption in the late 1800s, originally grown in

Western Europe and Africa, and Northeast Asia.

It is exceedingly invasive, quickly occupying a site,

and then all recreational water uses are eliminated.

It is also extremely costly to control. It has both

positive and negative effects. The negative are

obvious, the weed overruns, shades, and drowns

other floating plants, on the other hand, there is

a positive effect. Water Chestnuts are sold in many

Oriental Restaurants, they have a tangy, sweetness

that some people find irresistible. Controlling

efforts are being done abruptly. Mechanical harvesting

and hand removal is helpful. I, personally, understand

why these weeds are a tremendous problem...