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 ...

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.