Weeds need to be eradicated before they start to compete with desired vegetation for nutrients, water and space. Some weeds look a lot like grass, growing thin blades, but many common weeds grow small leaves.
Mouse-ear chickweed is a perennial weed that spreads with creeping stems and has dark green, hairy foliage. The leaves are less than 1 inch long and oval shaped. The weed produces very small white flowers in spring. Mouse-ear chickweed is common in shaded and moist lawn areas.
Prostrate spurge spreads with seeds and has oval, small foliage that is about 3/5 inch long. The hairy leaves often have purple spots. The weed produces tiny, cup-shaped flowers in June. Prostrate spurge commonly infests poorly managed and drought-stressed lawns growing in thin soil.
Black medic belongs to the legume family and has shallow roots and hairy stems. The oval, dark green foliage grows in the form of 1/5- to 3/5-inch long leaflets. The weed produces 1/8- to 1/6-inch long, yellow flower clusters in spring. Black medic grows on all types of turf and is easy to control by hand pulling.