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Ludwigia longifolia (Long leaf Willow Primrose)Last modified: June 19, 2009 - 8:48 AM
Ludwigia longifolia In Port Stephens most infestations are in the Salamander Bay area. A relatively new weed with an obvious ability to invade and dominate shallow wetlands Ludwigia longifolia has been declared a class 4 and 5 noxious plant. This means that the sale of plants is banned and existing plants must be controlled. Research has found it can produce 25 million seeds per square metre under two year old plants. Seeds are easily spread by water, wind, human activity and animals, resulting in rapid spread. Control of plants with herbicide or by physical means is effective but constrained by the nature of the wetland habitats and the prolific seedling growth. A native beetle Altica sp. has been observed feeding on plants. Research into the effectiveness of these beetles for ludwigia control indicated they are not going to provide adequate control except in situations where access is very limited for other methods. Please report suspected infestations of Ludwigia longifolia. Contact details | ||||||||
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