I love that you have a README and License file (main criteria for open source category). The README is well thought out and I'm enjoying the screenshots.
Graphics are so fun and cute; love it. Music is lovely and chill, fits your game nicely. It'd be great if we can speed up the text on screen. The narrative is great at the start and serves as a good tutorial. It'd be good to see progress (ie. 1/10 plants harvested etc.) so we're not trying to keep track in our head.
Is the game meant to go rather dark? Makes it a little hard to see what's happening. Would be good to have the "Help" or Lila close by to double check what effect each square has on the one next to them. She said she wouldn't be far away so I expected her to pop up with some help; maybe add a "?" under the "!".
Great job overall and really enjoying this game. Good chill vibes.