What are plants that require a permit for movement into the US known as?

Plants that require a permit for movement into the United States are known as federal noxious weeds. This classification is used to identify invasive plant species that are deemed harmful to agricultural interests, natural resources, and public health. The U.S. Department of Agriculture (USDA) and state governments regulate the introduction and spread of these plants to prevent their adverse effects on local ecosystems and economies.

By enforcing strict regulations on the importation and movement of federal noxious weeds, authorities aim to minimize the potential risks these plants pose once they establish themselves in new areas. In contrast, other classifications, while they might refer to undesirable plants, do not specifically indicate the need for a permit for their movement into the U.S. Thus, understanding the specific designation of federal noxious weeds is crucial for effective pest management and compliance with legal regulations concerning plant importation.