[Nepeta]

This year it is 'Datura Sativa', which flowers similarly to an up-flowering Easter lily, but has certain medicinal properties.

'Medicinal' in medieval terms...as part of a witches ointment...to make them believe they were flying.

This stuff is not to be messed with casually. I knew someone who pulled up a stand of jimsonweed by hand and had mild hallucinations afterwards.

[Ellendra]

Yikes! I can believe that.

Random trivia fact: Jimsonweed cannot grow in soil that is low in selenium.

[Tilted Irish Kilt]

Nepeta:"This stuff is not to be messed with casually."

Yes , I am aware , and dutifully wash my hands before and after working with the plant. It is a solanaceous family member ( tomato ,potato, etc.)
I am aware that the plant, leaves , and seeds are toxic in consumption , although it makes for a beautiful low flowering shrub. It is pot bound and will not spread.
Medicinal in that it is psychotoxic , can cause hallucinations, is a diuretic and causes diarrhea, depending on quantity.
It is known as Jimsonweed, Jamestown weed , thornapple, etc.
It also had an historic usage in that local women cooks, hired by the Hessians ,cooked a stew with Datura leaves, prior to the Battle of Yorktown.
Incidently , it was the only significant battle of the American Revolution that the colonials won , and was the turning point of the Revolutionary War .
But yes , I handle plants with care, and conduct frequent hand washings. The upright lily-like blooms are beautiful .