Really cute idea, can't wait to be a little plant robot and run around to solve puzzles. Designated locations for plants is probably a smart move. I think possibly on top of the collectables telling story they could also assist or solve the puzzles in different ways. This could maybe help further push the theme of how plant diversity is important and give greater incentive to go after them outside of just getting the true ending. Overall, nice work! Excited to see how the game turns out :]