(a) Notwithstanding the criminal penalty for the violation of this subchapter, the existence or growth of Johnson grass in a Johnson grass control and eradication district is declared to be a public and common nuisance, and it is the duty of the prosecuting attorney in whose district the offense occurs to bring an action to enjoin the nuisance.
(b) Any landowner whose land is adjacent to or within one hundred feet (100') of land on which the Johnson grass nuisance is permitted or maintained may bring a civil action for injunction against any person permitting or maintaining the nuisance and shall, in addition to injunctive relief, be entitled to recover double the actual damages sustained as a result of the nuisance as well as a reasonable attorney's fee and cost of bringing the action.