Over 114 sites across Leitrim have been treated for invasive plants in the last four years.
The issue came before today's meeting of the Carrick on Shannon Municipal District, where councillor Des Guckian requested an update on council efforts to tackle the plants along regional and national roads.
Japanese Knotweed, Rhododendron and Himalayan balsam are just three invasive species of plant in Ireland, that can require specialist care in their removal to prevent further spread.
Japanese Knotweed itself can seriously damage buildings and infrastructure by growing through concrete, tarmac and other hard surfaces if any cracks exist.
Leitrim County Council are currently in contract with FenceScape, a professional company who apply herbicide to control invasive species, with 114 roadside sites treated in recent years.
While the Council are not permitted to treat invasive growth on private property , they can help inform landowners on effective measures of controlling the spread.
The local authority is also continuing 4 year plan to tackle Japanese Knot weed across the county.