Road authorities, including road authorities of cities shall cause all noxious weeds on their respective highways and streets to be cut down or otherwise destroyed or eradicated as often as may be necessary to prevent the ripening or scattering of seed and other propagating parts of such weeds.
Minn. Stat. § 160.23
1959 c 500 art 1 s 23; 1973 c 123 art 5 s 7