Are tomato leaves toxic to humans?
Well, this is kind of a mix of myth and truth, because tomato leaves can be seen as toxic or nontoxic, depending on your point of view. Yes, they are toxic because they do contain toxic alkaloids, including tomatine and solanine.
Are tomato leaves and stems poisonous?
Tomato. I know, I just said the tomato isn’t poisonous. The fruit isn’t, but the leaves, roots, and stem (and, in limited doses, even some unripe fruit) are rich in tomatine, an alkaloid that’s mildly toxic to humans.