Lagarosiphon, South African oxygen weed
|Botanical Name||Lagarosiphon major|
IdentificationVigorous 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.
HabitatsTo 6.5 m depth in lakes and ponds, rivers and streams. Scattered throughout. Forms dense stands.
Impact to Biota and EcosystemsForms dense stands in waterbodies excluding other vegetation.
Dispersal Routes, Vectors, Infestation SourcesA commonly cultivated species which is occasionally released to waterbodies by disposal from garden ponds and aquarims.
Cover weed mat to exclude light.
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.
This plant is prohibited from propagation, sale and distribution within New Zealand!