Parsley-piert is a winter annual broadleaf weed that is also known as Slender Parsley-piert and Aphanes microcarpa.
Parsley-piert has many branches that grow freely and low to the ground. Its leaves are three-lobed, with each lobe dividing again into three or sometimes four lobes. Blooming in spring, this broadleaf weed produces small and inconspicuous green flowers in leaf axils. Reproduction occurs by seeds.
Frequently found in lawns, fields and pastures, this broadleaf weed can also be found in disturbed sites and waste grounds. It thrives in much of the southeastern United States.
Proper cultural practices, such as proper mowing and watering, can help prevent Aphanes microcarpa by creating dense grass, which inhibits this broadleaf weed's ability to grow. Physical removal (i.e., pulling weeds) can be effective, though you run the risk of spreading the seeds to additional areas of your lawn and landscaping.