I have been trying to find Earth Root, I have a good bit of Ginseng for health pots, but I'm starting to think the ER doesn't exist. As the main ingt for mana pots, I would think it could be found other than purchased from merchs. Whisperwood is plentiful and there is enough DAMN FATFERN to fill Lovis' tower.
You would think a basic ingrt would be plentiful, but by the DIVINE I don't see it.
