This hairy fountain is not a mere weed. It is a monument, a throne, a battleship, and a seed bank. Its flowering spire is a castle tower from which its yellow flowers boldly shine. Over the centuries, it has been used for asthma, coughs, and congestion, for rheumatism, boils, ulcers, infected sores, and sore throats. Its great leaves and stalk host bees and bugs both beneficial and pestilent.