Skip to content Stellaria media (L.) Vill. Also known as: starwort, winter-weed, starweed, satin flower, and chickenwort Common chickweed is a winter annual broadleaf weed that usually emerges in fall or early spring and can overwinter as a small rosette. Depending on location, common chickweed can germinate and emerge throughout the summer months with adequate moisture and cooler temperatures. Chickweed forms dense mats that grow close to the ground in cool and moist conditions.