Chickweed is Stellaria media, a low, sprawling annual of gardens and waste ground across the temperate world, named for its tiny white star-shaped flowers, stellaria from the Latin for star. It is one of the commonest of weeds and one of the most nutritious, long gathered as a wild green and, as its English name records, fed to poultry and cage-birds. A folk weather-sign held that its flowers close before rain. It is a humble plant, valued for what it plainly is rather than wrapped in much myth.
Its resilience is genuine: chickweed keeps growing and flowering through mild winters when almost nothing else in the garden is green, which made it a valued stopgap salad and potherb in lean early-spring weeks before other crops came in, a real subsistence use recorded across rural Europe and not a modern foraging fashion only. Its milky sap, visible when a stem is snapped, gives one folk explanation for the name chickweed, feeding chicks, alongside the simpler fact that poultry and cage-birds relish the plant. Because it self-seeds so freely and can complete several generations within a single year, it was sometimes read as a small emblem of fertility and increase in its own right, a meaning that sits alongside, rather than replaces, its gentler lunar symbolism of tenderness.