Plants are considered weeds when they grow where they are not wanted. In their natural environment or in a wildflower garden they are appreciated. It is when the wind or birds pick up seeds and deposit them in the middle of a lawn that they become a nuisance. The University of Georgia recommends several ways to control lawn weeds in the state from prevention to finding weed-free grass seeds to the proper use of herbicides.
Asiatic pennywort (Centella asiatica) is also known as gotu kola, coinwort, Asiatic coinwort, American coinwort, spadeleaf and Asiatic pennywort and is a member of the carrot family. The plant grows along the ground by means of runners producing green scalloped-edged leaves with red margins on long, red stems and small pink-white flowers growing in clusters during the summer. Asiatic pennywort grows in full sun and in wet soggy areas, will die back in a drought and re-appear when moisture returns. The weed is found in the Southeastern states.
Blackhorn plantain (Plantago lanceolata) is also known as English Plantain. The plant features elliptic or lance shaped green base leaves that grow up to 12 inches long and 1 inch wide. The flower stalks grow from 6 to 18 inches tall with small, brown flowers growing in long clusters at the top from late spring to early fall. The weed spreads by seeds, which are wind-pollinated, will re-seed itself and grows in full or partial sun and in any type of soil. Blackhorn plantain withstands foot traffic and is not destroyed by mowing. The weed is found throughout Georgia, as well as elsewhere in the continental United States.
Cutleaf evening-primrose (Oenothera laciniata Hill) grows from 4 to 18 inches tall with leaves that measure 2 inches long and ½ inch wide with toothed or lobed edges and a white middle vein. The plant produces tiny yellow-pink flowers that bloom from March through October, opening in the evening and dying the next day. Cutleaf evening-primrose grows in partial-shade and well drained soil. Cutleaf evening-primrose can be found throughout Georgia, as well as in all areas east of the Rocky Mountains.
Carolina geranium (Geranium carolinianum) is also known as wild geranium and Carolina cranesbill. The plant grows up to 1 foot tall producing palm-shaped, hairy leaves and pink or white flowers growing in clusters at the top of the stems from March through July. The weed grows in partial shade and gravel or clay soil and is found all through the Unites States.