I like the concept, it's a fun idea for a potion-making type of game.
Admittedly I wasn't really sure for a while if what I did was any good because I didn't really have any feedback on whether or not what I did was good or if I was even giving them what they asked for (though I eventually noticed the gold going up, which at least confirmed I was doing what was expected of me). If you ever try to go further with this game, I'm wondering if a garden where you grow your own plants would be better than exploring a large empty forest (unless you filled it up with interesting characters or something)