Agriculture; noxious weeds; poison hemlock; Kudzu; fines; counties; state agencies; effective date.

HB 1551 designates poison hemlock and Kudzu as noxious weeds across Oklahoma, requiring all landowners to annually treat, control, or eradicate these plants on their property to prevent seeding. The bill mandates counties and state agencies to similarly manage infestations on public lands and establishes fines of up to $1,000 per day for non-compliance by landowners. It also directs the State Board of Agriculture to create infestation categories, conduct annual surveys, and provide public information - including assistance resources and enforcement details - to landowners. The law applies statewide to all property owners and public entities maintaining land, with enforcement beginning November 1, 2025.