Carpetweed is a summer annual with a short tap root. Seeds lie dormant over the winter then sprout slowly in the spring. Once the seeds have sprouted however, it grows rapidly in the summer heat.
Carpetweed prefers fertile, dry, sandy or gravelly soil in lawns and landscapes along walkways. It is commonly found in shaded areas in the lawn and may be a problem in spring seedings of new lawns.
Can be hand pulled or use a broadleaf herbicide in early to midsummer.
Preemergenct herbicides applied in midspring will prevent carpetweed from developing. Keep the lawn vigorous through a regular fertilization program and good mowing practices.