Stellaria media

Common chickweed is a low-growing, succulent weed that often sprawls out. It has weak, straggly stems and has star-like flowers with five deeply notched petals, slightly smaller than their surrounding sepals. It is common on recently disturbed ground, especially in gardens, farmyards and rubbish heaps, also on shore near strandline. It is often fed to poultry as a tonic.