Why Lake Wānaka is Being Sprayed for Invasive Lake Weed This May

Updated as of 25 May: LINZ have said the Diquat spraying has been delayed another 2 weeks. With a further update coming Monday 8 June. From Monday 18 May to Friday 19 June 2026, a targeted aquatic weed control programme using diquat herbicide is scheduled to take place… Read More