Actually it’s a specific species from Africa.
Not so much soil specific as the low yield you mentioned has only specialty growers willing to commit to it.
I have some geisha grown in it’s native ground on the way soon.
Yeah I remember the yield thing was the big part. When I first saw it I was like WTF why is this like 3-4x the cost of the others.
Hey, at least it isn't monkey picked tea.