Just like the 1958 science fiction classic movie “The Blob”, Giant Salvinia burst onto the scene in the United States, becoming one of the world’s worst invasive aquatic plants. In 1998 Giant Salvinia was recognized as a U.S.
Native to Southern Brazil, Giant
Biologists believe Giant Salvinia was introduced by the aquarium and garden pond industry, which probably distributed it as an ornamental, not knowing of its invasive potential.
Giant Salvinia is a free-floating fern with small elliptical leaves, green to brownish-green in color. Upper leaves are covered with rows of white bristly hairs. It reproduces new branches developed from lateral buds and through vegetative fragmentation. These dense mats form rapidly and are distributed quite easily by wind and wave action.
This rapid growth can severely reduce oxygen supply
At this time, an effective way to control the spread is through herbicide use. Herbicidal control produces control in as little as two weeks. Small-scale outdoor studies have shown
The most effective control of Giant Salvinia and any other invasive aquatic plant is prevention.
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