I tell you about the medicinal and culinary use of Oregano. This herb is my "go to" for bronchial and sinus infections. While mostly known as a tasty herb in cooking, it is powerfully medicinal.
"Them that don't know him don't like him and them that do sometimes don't know how to take him, he ain't wrong he's just different and his pride won't let him do the things to make you think he's right" - Ed Bruce (via Waylon and WIllie)
While some of the herbs you teach about are lesser known, I think this is one which would be pretty readily available for people to buy bottled in oil form if they can't grow or forage it.
Celtic/fantasy/folk/shanty singing at Renaissance faires, fantasy festivals, and other events in OR and WA, USA.
RionaTheSinger on youtube.
Pop-up garden/vintage+ yard stand owner.
When it is used for evil, then watch out! When it is used for good, then things are much nicer. Like this tiny ad: