This highly invasive plant is a real problem for our waterways. It grows very rapidly in late summer, up to 20cm per day, and is responsible for swamping waterways, blocking water flow, crowding out native plants and taking oxygen from fish and insects. It's becoming more and more of a problem across the country, blocking canals, rivers and other waterways.
Like Japanese knotweed, floating pennywort also has the ability to grow from miniscule fragments, making its removal incredibly difficult and expensive. We have to physically remove the plant from the water with machinery, which is expensive and time consuming.
