"savoury messes of chickweed"

Creative Commons Attribution Share AlikeChickweed - Credit: André Karwath
 Chickweed, as the name suggests, is a weed, and thought to be the most common in the world.  It can flower all year round.  When growing well, it is high in vitamins and potassium, and can be added to soups and salads.  The sap is said to help with skin irritations and swellings; the plant can also help ease a cough when taken as an infusion.