Dandelions produce thick taproots that can penetrate up to several inches into the soil. It has finely divided leaves that give off an acrid odor when crushed. The plant can grow up to six inches tall, but it has the ability to escape damage by lawn mowers. Dog fennel has a taproot and does not root at nodes. Perhaps the plant's most distinctive feature is the large flower with white petals and a yellow center.
Ground ivy is a low-growing, creeping, perennial broadleaf weed.
Leaves are oppositely arranged on stems and are round or kidney-shaped with scalloped margins. The upper leaf surface has distinct veins and is sparsely hairy. Stems are square, creeping, and long. Ground ivy produces nodes that root at leaf and stem axils and that can form new stolons. Flowers are blue or purple and trumpet-shaped.