Neighbours have seen weeds and hedge cuttings removed from a Preston road after nearly a fortnight.
Lancashire County Council took action after the hedges along South Meadow Lane, Broadgate, near the cricket club were trimmed.
Angry residents saw the pavement covered in cuttings of Japanese knotweed and cones put up since the tree work was done on 16 August.
A spokesman for the county council said: “This is a private hedge and we’ve tried, but been unable, to get in touch with the owner in reasonable time, so have gone along today to clear up the clippings.”
A female resident, who asked not be named, said: “The council had said it had been removed but nothing was done.
“If it gets into house gardens, as it’s Japanese knotweed, then it’s a nightmare.
“It blocked the pavement for weeks.”