Butterbur is a herb belonging to the Asteraceae family, which makes it a relative of the dandelion, arnica, and of feverfew. It originated in Asia and can be found growing there as well as in parts of Europe and North America. It has a preference for wet ground and is typically found growing in marshes and other damp areas. Because it is native to Asia, it is considered an invasive species. It spreads very quickly in the right environment.
In Ancient Greece, the broad leaves of the butterbur plant were once used as hats by Greek shepherds. The hats were called petasos, which is the origin of the plant’s Latin name: Petasites hybridus. The butterbur name comes from the fact that the leaves were used as a wrapping for butter during warm weather. They kept the butter cool. Butterbur’s other names include lagwort, which is what it is called in the UK. It is also sometimes called bog rhubarb or coltsfoot.
Dioscorides wrote about butterbur in the 1st century. He recommended the leaves as a treatment for skin ulcers. The leaves were to be pounded and applied topically. In the 1500s, Gerard wrote that dried and powdered butterbur root that was mixed with wine was a good treatment for plague because it acted as a diaphoretic. A century later, Nicholas Culpeper would write that butterbur was a tonic and good for treating shortness of breath. At around this time, butterbur was also being used to treat wounds.