Nice idea! Love how you use light and shadow in such a way to create such interesting puzzle. Well done!
My bit of nitpick is that it would be nice to have some indicator to quickly show what the plants want. Something icon-based that persists would be much better than having a text that was shown when hovered. Also showing what the plant has and doesn't want would also be nice, especially when in more advanced levels and complex layouts. These are just QoL improvements though, there is nothing wrong with the game currently as-is!
Anyway, good job!