Va. Code § 33.2-217
Neither the Board nor the Commissioner of Highways shall plant or cause or suffer to be planted on the right-of-way of any state highway any of the weeds or plants known as devil shoestring (Tephrosia virginiana), Johnson grass (Sorghum halepense), or barberry (Berberis vulgaris) if the governing body of the county in which the highway is located declares by resolution such weeds or plants to be injurious to adjacent property.
The Board shall cause all such weeds or plants planted or caused to be planted by the Board or Commissioner of Highways on any state highway right-of-way to be dug up and destroyed.
Any owner of land adjacent to any state or other public highway right-of-way, or his agents and employees, may dig up, cut down, or otherwise remove and destroy any of such plants or weeds and any other plants or weeds that are or may become noxious or otherwise injurious to his property found growing upon any state or other public highway right-of-way adjacent to his land.
Va. Code § 33.2-217