The Pathfinder RPG edition of Ultimate Herbalism, part 1 of 3 of the Strange Magic 2 project, is now available here at Paizo.com!
At its heart, herbalism is a collection game. Pick random herbs from your current biome, preserve the ones you like for tomorrow, and plant the ones you REALLY like to have them wherever you go.
Couple this core concept with bug collection, rock collection, cooking, giant venus fly trap companions, apothecary skills, and more to create the precise flavor and level of RNG you want in your druidic chaos mage. And yes, that means this book has six spellbooks.