Fleabane is a perennial wildflower of damp ditches and sunny stream-sides. It has wrinkled downy leaves with an odd smell, similar to carbolic soap. Masses of long lasting yellow daisy flowers are produced in summer and attract many insects. It is a good idea to plant with Sneezewort, which likes similar conditions. Traditionally bunches were hung in rooms to repel fleas or burned as a fumigant. Astringent extracts from the leaves and roots have been used to treat dysentery.
picture thanks to AnRo0002, CC0, via Wikimedia Commons