wild dagga is a legal herb.

"Leonitis leonurus is also known as Lion's Tail or Wild Dagga. It is a
member of the Mint family of plants that is used by the Hottentot
tribesmen to promote euphoria and exuberance when smoked.

The active component in Wild Dagga is leonurine, the same alkaloid that is
mildly psychoactive in the similar Leonurus sibiricus (marihuanilla). It
may be addictive on the order of nicotine with regular usage. Wild Dagga
is 100% legal in the United States. It is all-natural and does not contain
any controlled substances. "

It's a relative, but it's not marijuana. "Weed" is just a really popular slang term for marijuana, but there's a whole lot of "weeds" that people smoke all over the world..