C.R.S. § 35-5-102: Duty to control weeds.

It is the duty of all persons owning land or any interest therein in the district, the department of transportation, the boards of county commissioners, school boards, the governing authorities of incorporated towns and cities and of railroads and ditch companies, and those persons supervising state-owned lands to use reasonable means to control the noxious weeds if the same are likely to be materially damaging to the land of neighboring landowners.