Throughout the summer and early autumn, a combination of warm weather, sunshine and extra nitrates from agricultural run-off create perfect growing conditions for duckweed, water fern, common reeds and Canadian waterweed and our canals can become overcome with invasive weeds. These fast-growing plants are spread by passing boats, canoeists, paddle boarders, anglers’ nets and walkers’ muddy boots and, left undisturbed, can form a thick green carpet on the water. This can then cause problems for boat engines, and its solid appearance makes it a potential danger for children and animals. Hotspots for the invasive weeds are low flow areas around the Lancaster Canal, Garstang, Cabus Nook, north Preston, Radcliffe Wharf and Woodplumpton.
