Thread:AwesomeDude4713/@comment-5760976-20200113021650

Because it's easier to reply on the wall than on the category talk (which I'm surprised still works) on why those Plants are environment modifiers (I believe) -
 * Lightning Reed's plant food creates a cloud that effects the environment.
 * Torchwood can modify Pea plants on the field to have their peas stronger (or weaker in Snow Pea's case)
 * Witch Hazel and Missile Toe can hit the entire field, though in Hazel's case, it can change a Zombie into another thing.
 * Missile Toe also has a Chinese upgrade that effects the environment.
 * Citron also has a Chinese upgrade that effects the environment. 