That is a really great idea for a game. There is so much you could do with that concept. I imagine a game where your plant grows on a skyscraper and you need to get water from water pipes , find places to climb that have enough edges to offer you support so the plant doesn't fall down but that also are exposed to sunlight.
But im not understating your execution. It is really well made aside from a bit of a UI pain. very short and just a relaxing experience.
great work keep it up.