Weeds
It is said that weeds were given to man by God because Adam disobeyed Him in the Garden of Eden, so that no amount of effort will remove them from the earth.

Woodruff
This plant is reputed to have healed cuts and wounds when applied, and also treating liver conditions during the Middle Ages. Heavily used in herbal medicine woodruff was also used to deter insects and mixed with snuff to improve the fragrance. The plant has small white flowers in the summer, is low-lying and has narrow leaves which will stick to almost anything.