Common Name(s): | Southern naiad, Bushy pondweed |
Scientific Name: | Najas guadalupensis |
Family: | Hydrocharitaceae |
Growth Traits: | Native, annual, warm season |
Description: A very common plant that can grow aggressively and become very dense in the water column. Two to three leaves
appear somewhat opposite at nodes on the stem and usually are about 0.4 inch in length but can be as long as 1 inch. Flowers are small and can be difficult to see with the naked eye. Interestingly, this genus is one of the few that can pollinate underwater. Southern naiad grows best in clear water and is a highly preferred food of waterfowl.
It also provides good habitat for invertebrates, which are an important food source for both fish and waterfowl. It usually does not grow in water deeper than 7 feet. |
Chemical Control Options: Diquat, endothall, fluridone, penoxsulam or flumioxazin. Fertilizing a pond to produce a phytoplankton bloom or using an aquatic dye prevents sunlight from reaching the plant and limits growth. |
Mechanical Control Options: Physically removing southern naiad is only temporarily effective due to its ability to come back from roots or remaining
fragments in the water. |
Biological Control Options: Southern naiad is easily controlled by grass carp because it is one of their preferred foods. |