Rue (Ruta graveolens), also known as herb-of-grace, is a type of Ruta cultivated as an herbaceous and ornamental plant. It is endemic to the Balkan Peninsula.
Today, it is cultivated in gardens worldwide, particularly for its bluish foliage and often for its tolerance to dry and hot soils. Rue is a member of the Rutaceae family. Unfortunately, the knowledge base on the Ruta genus is somewhat incomplete. Some botanists suspect about 40 species[1] in this genus, but only 8 are currently known.
