I like the Idea and how the map was made, Maybe it is me but i think that the ringing sound is a little to high. The limition is narratively well placed, if you can, try adding an animation when you water the plant. If you want you can only have a WebGL build (so more people will try your game since it's faster to load on a browser) and you can even remove the quit button if you want!

Character design reminds me of Kindergarten! I like the mood of this game