You had to ask me that question, didn't you?
Off the top of my head the predominant leaf for the non-tobacco cigarettes is lettuce. Cabbage, Kale and spinach also come to mind.
Lettuce and cabbage and kale and spinach???????????????????
My husband says that my garden has never looked lovlier. ;) LOL By the way, have you heard about the smoking nazi's trying to take over Anchorage businesses? Damn fools and nanny state wannabe's are even up here.