German bearded iris

The root is diuretic, emetic, expectorant and mildly purgative. Another report says that the juice of the fresh root is a strong purge of great efficiency in the treatment of dropsy. In the past, sections of the dried root have been given to teething babies to chew on, though this has been discontinued for hygienic reasons. Roots of plants 2 - 3 years old are dug up after flowering and are then dried for later use. Source: https://pfaf.org/