Yellow woodsorrel occurs extensively throughout the United States and is a very common turf weed. Ground ivy or creeping charlie is a low-growing perennial widely distributed throughout the United States. It forms dense patches in turf. It has shallow-rooted creeping stems. The square stems root at the nodes that come in contact with the ground.
Leaves are generally bright to dark green, somewhat hairy , opposite , and borne on long petioles .
Ground ivy is well adapted to moist, shady areas , where it can easily out compete turfgrass. The purplish-blue flowers have the typical trumpet shape found in the mint family. Due to its extensive stolons and root system, ground ivy is difficult to control. Plantains , Plantago spp. These species form basal rosettes of leaves.