Lagarosiphon, South African oxygen weed
| Botanical Name | Lagarosiphon major |
|---|---|
| Family | Hydrocharitaceae |
| Origin | Southern Africa |
Identification
Vigorous perennial growing submerged in water. Stems to 5 m long, slender, brittle and much branched. Leaves dark green, crowded above, alternate, stiff and curved downwards, usually 6-20 mm long, gradually tapering to a sharp or fine point. Flowers solitary, tiny, pinkish. Can be confused with other oxygen weed species. Recognised by its alternate downward-curved leaves.Habitats
To 6.5 m depth in lakes and ponds, rivers and streams. Scattered throughout. Forms dense stands.Impact to Biota and Ecosystems
Forms dense stands in waterbodies excluding other vegetation.Dispersal Routes, Vectors, Infestation Sources
A commonly cultivated species which is occasionally released to waterbodies by disposal from garden ponds and aquarims.Management
|
Management |
|
| Physical Control |
Cover weed mat to exclude light. |
| Disposal | |
| Chemical Control |
Diquat (Reglone) - see label rates. Within the Bay of Plenty region a consent is required from Environment Bay of Plenty before Diquat is applied to water. |
|
Biological Control |
|
| Recommended Approach | |
Further Comment
This plant is prohibited from propagation, sale and distribution within New Zealand!