Banned aquatic weed ‘Salvinia’ found in Northland

A banned aquatic weed that forms dense mats that can double in size in days and pose a drowning risk has been discovered in two home garden ponds in Northland, prompting a warning from biosecurity experts. Salvinia (Salvinia molesta) was thought to have been officially eradicated from the region, however, Northland Regional Council biosecurity staff have in recent weeks stumbled across the plant in both the Hikurangi area, near Whangarei, and near Okaihau in the Far North District.


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