I think that's the problem. Back home, until I got to be college aged, I had one choice. Well, I was just made Praetor. But the adults are back ups. Not all of them choose to fight.
That could work, too! It shouldn't be too hard. I bet Persephone knows something about them and she's a daughter of Demeter, so she can at least give us tips on growing them. I've never had a plant.