Easily one of the best game I ever played on a game jam!!! I really liked everything. The graphic reminds me a lot of undertale, the idea of planting plants to defend yourself is really cool, and my god the music is soooo great.
Please develop this further and make it more fleshed out, such as adding more plants and quirky effects that they can get. I feel like the more wacky the stuff on the screen will be the more fun I will had. Because to be honest, my enjoyment doesn't come from the strategy to plant it perfectly, but rather just running around enjoying the music and witness various vfx happened on the screen.
I did encounter a technical issue though, on the end of night 2 the frame rate drops to below 10 fps. Maybe I plant too much stuff? Anyway, great job!