Chickweed (Stellaria media) Common chickweed is a cool season annual that is a low growing, succulent weed that often spreads out in extensive mats. It may survive summer in moist, shady, cool areas. Seed leaves have prominent mid veins and are about four times as long as broad, tapering to a point at the tip. True leaves are broader, opposite, and yellow green. Flowers are small but showy with five deeply cut white petals. Control by mulching beds and improving turf quality. Easy to remove by hand.