Non-Herbicide Management Options 1. 21.

Non-Native. Although this species rarely overwinters in TVA systems, it could quickly become one of the most expensive species to manage if the species becomes more tolerant of colder water.

Native to South Eastern Brazil. The salvinia weevil (Cyrtobagous salviniae) is originally from south-eastern Brazil and was introduced into Australia by the CSIRO in 1980 to combat the growing threat of salvinia. Report a Sighting. When young, leaves are smaller and lie flat on the surface of the water.

Although that outbreak was successfully eradicated, giant salvinia has …

By 1969 hydrilla had infested several lakes in north Louisiana and by 1980 had spread throughout the state. Hydrilla was introduced into Florida from Asia in the aquarium trade in the late 1950s. Submerged fronds are “stringy” and resemble roots.

(2.5-3.8 cm) long, oblong, and vary in color from green to gold to brown. Salvinia molesta is an aquatic fern. Impacts. Giant salvinia is an invasive floating fern from Brazil that can double its surface acreage in less than one week in optimal conditions. It has been spreading and causing problems in coastal Louisiana since 1989. The definition of an invasive species is any species that is not native to our ecosystems and cause harm when introduced to the ecosystems. The surfaces of the leaves have rows of arching hairs that look like little egg-beaters.

Description. Mitchell Floating fern family (Salviniaceae) Origin: South America Background Giant salvinia, also known as water fern or kariba-weed, was introduced as an ornamental aquatic plant and is spread to new water bodies on boats and fishing gear, by dumping of aquaria, and by other unintentional means. Salvinia biloba giant salvinia This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Mitchell Floating fern family (Salviniaceae) Origin: South America Background Giant salvinia, also known as water fern or kariba-weed, was introduced as an ornamental aquatic plant and is spread to new water bodies on boats and fishing gear, by dumping of aquaria, and by other unintentional means. Giant Salvinia Salvinia molesta. Giant Salvinia . About Giant Salvinia.

Salvinia molesta is a free-floating aquatic fern which exhibits considerable morphological variation in response to environmental conditions.

Salvinia molesta D.S.

Giant Salvinia .