New York State maintains a comprehensive list of prohibited and regulated invasive plant species under 6 NYCRR Part 575. In Manhattan, species like Japanese knotweed, giant hogweed, water chestnut, and numerous others are banned from sale, transport, and planting.
The NYS DEC Invasive Species Regulation (6 NYCRR Part 575) classifies invasive species into two tiers: Prohibited species that cannot be knowingly possessed, sold, transported, imported, or introduced, and Regulated species that can be possessed but cannot be sold, purchased, transported, or introduced. The prohibited list includes plants such as Japanese knotweed (Fallopia japonica), giant hogweed (Heracleum mantegazzianum), water chestnut (Trapa natans), mile-a-minute vine (Persicaria perfoliata), and two running bamboo species. The NYS Department of Agriculture also maintains a list of invasive plant species that nurseries and garden centers are prohibited from selling. In an urban environment like Manhattan, invasive species management focuses primarily on park lands managed by NYC Parks Department, community gardens, and private properties where ornamental plantings may include prohibited species.
Violations of 6 NYCRR Part 575 can result in enforcement actions by the NYS DEC including fines. Nurseries and retailers face penalties for selling prohibited species. Property owners who knowingly plant prohibited species may be subject to removal orders. Giant hogweed poses a direct public health risk (severe skin burns) and requires immediate reporting to DEC.
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