The weed is not in any South Island waterways or Rotorua lakes, but could be after Maadi cup.

A single straw harvest removes between five and 60 pounds of nitrogen per acre and between 0.5 and five pounds of phosphorus ...

Clusters of the invasive plant curley leaf pondweed in Great Hill Pond last year made swimming “impossible” and put stress on vessels' motors, according to the Friends of Great Hill Pond. But those ...