Invasive hornwort weed risk at Lake Karāpiro ahead of Maadi Cup
Friday 21 February 2025 · 2 outlets · 2 reports · updated In this story Land Information New Zealand
Officials are concerned that invasive hornwort weed could spread from Lake Karāpiro to South Island waterways during the Maadi Cup rowing regatta in late March. Helicopter spraying is scheduled to begin next week to manage the weed before thousands of rowers arrive at the lake.