Most are! You can actually grow a lot of fresh ones in your kitchen and be fine with just using a bit at a time.

( she suspects nothing! no imp banishing or cult activities here! if they were part of the group believing that she's been bullied, she doesn't recognize them either... she's just happy to be having a bit of a.... relatively normal day at school. relatively. )

They grow really fast, too!! I like chamomile for that sort of thing.