Butterbur Root also known as Petasites hybridus, Lagwort, Plague-flower, Butterdock, Butterfly Dock, Butter-dock, Bog Rhubarb, Flapperdock, Umbrella leaves, and Bogshorns. During Colonial times, housewives often used the enormous leaves to wrap around butter to keep it cool and fresh. The plant is native to the wet, Marshy lands of Europe, Northern Asia, and even in parts of Scandinavia. It grows best in shady places, by waterways, marshes, or wet meadows. One variety is also native to North America. Butterbur Root contains Pyrrolizidine type alkaloids, mainly senecionine and integerrimine; flavonoids, including quercetin, astragalan and isoquercitrin; petasin, neopetasin; tannins; mucilage; volatile oil; sesquiterpene. Butterbur contains Pyrrolizidine Alkaloids. Not recommended for long term use. Feverfew is found in many old gardens, and is also occasionally grown for ornament. It was native to Eurasia; specifically the Balkan Peninsula, Anatolia and the Caucasus, but cultivation has spread it around the world and it is now also found in Europe, the Mediterranean, North America and Chile. Ginger (Zingiber officinalis) is the most widely used and available herbal remedy on the planet, with billions of people using it every day as both food and medicine. A tropical perennial growing to a height of two feet, ginger has lance-shaped leaves and bears stalks of white or yellow flowers.