Duckweed takes over Regent's Canal

WITH very little boat movement in the city, duckweed is taking over the Regent's Canal.

The green carpet is spreading throughout the canals in the city, more than usual, brought on by the good weather, Alan Tilbury reports.

Common problem

It is a common problem on the canals, but those with more boat movements fare better.  Not being a thick carpet, like floating pennywort, it does not foul the stern gear, but does effect boats using canal water to cool their engines.

Covering the water it traps litter and blocks sunlight, making it harder for underwater species to survive.

Though harmless to animals, it can easily be mistaken for grass, with particularly dogs attempting to walk on it.