This is just some subtle sketch for possible Plants vs. Zombies-themed game. Loosely based on the Plants vs. Zombies game series.
Something that's actually a bit dissatisfying with PvZ games is that they don't have proper storylines and campaigns. And the overall game concept doesn't use that many real plants and their effects accordingly. So, here is the attempt to write a game, that would be darker, more challenging, deeper, and more interesting than the original idea.
Poisonous garden (the prototype of real life The Alnwick Garden)