Chickweed is a common weed that grows in moist, sunny or partially sunny areas in the fall and early spring. It's high in vitamins and minerals, including vitamin C, calcium, potassium, iron, phosphorus, and manganese. You can eat chickweed raw in salads, or make it into tea, glycerite, tincture, or succus. 
However, more research is needed to confirm the health benefits of chickweed.