The following plants and weeds shall be deemed to be noxious, dangerous, and unhealthful vegetation, to-wit: all species of sunflowers, all species of rag weeds, all species of cockle burrs, all species of tumble weeds, all species of thistles, dandelions, plantains, wild morning glory, black mustard, and pigweed.
(2008 Code, § 8.3.1)