Which plants are most commonly regulated under USDA phytosanitary measures?

The selection indicating fruits, vegetables, and other agricultural commodities as the most commonly regulated plants under USDA phytosanitary measures is accurate due to the significant role these products play in both domestic markets and international trade. Phytosanitary measures are primarily designed to protect U.S. agriculture from pests and diseases that could compromise crop production and food safety. Fruits and vegetables are particularly vulnerable to a wide range of pests and diseases that can be introduced through imports, which necessitates strict regulation to prevent their spread.

In contrast, while forestry products, flowering plants, and herbs and spices may also be subject to regulations, they typically do not represent as high a risk in terms of widespread agricultural impact as fruits and vegetables. The focus on fruits and vegetables aligns with their status as essential food sources, making their health and safety a priority for the USDA's phytosanitary regulations.