Why is that white truck spraying along county roads and what is he using?

You may have seen a Boundary County truck out spraying roadsides and have wondered why? State law requires that Noxious Weeds be controlled. Idaho state statute title 22, chapter 24, list all the responsibilities of county governments and landowners. So, what is a noxious weed? Noxious is a legal term that the Idaho State Department of Agriculture (ISDA) uses to classify a plant that is considered to be injurious to public health, agriculture, recreation, wildlife, or property. The state has 67 weeds on the Noxious weed list. Boundary County has approximately 32 of these weeds. Noxious weeds are non-native invasive plants that came from other parts of the world. Some noxious weeds were brought to the United States as ornamentals, came in ship ballast water, packing material, or in seed mixes. When these plants were introduced here, they didn’t have their natural “predators” with them to keep the populations in control. These weeds outcompete the native species of plants. Weeds are typically spread by seed dispersal. The wind, water, animals, machinery, and people carry seed from one location to another. Some weeds can also spread from plant parts. It is estimated that Noxious Weeds cost Idahoans over $300 million dollars each year.