I originally had a larger screen (but there was some UI issues and I had to cut it down by the end). However! After the jam, I'm taking in all these notes and I'm making changes and additions to the game. The first thing on that list is definitely a wider screen (so growing isn't so bad) and making growing have a larger effect (also adding a tutorial stage explaining the controls).
Thank you so much for playing and your constructive feedback! :)