Five years after the end of a $2.1 million campaign to attack it, the invasive aquatic weed Ludwigia is back and 'as bad as ever,' clogging Sonoma County waterways like the Laguna de Santa Rosa.

laguna's ludwigia down, but not beatenthree-year program has reduced fast-spreading water weed, but officials still seek effective long-term solution Skip to content Skip to footer Show Menu ...

Your potted plant appears to be a Ludwigia species. There are two local species: the Ludwigia hyssopifolia (Water Primrose) and Ludwigia octovalvis (Primrose Willow).