Just played through the demo. It's fun! I'm happy that the controls feel tight and allowed me to fluidly perform actions such as jumping onto a ladder and starting a climb in midair. The visuals and audio are also very clean and feel very appropriate for an arcade-style game.
My only small critique is that I feel like watering flowers takes just a few seconds too long and and ends up slowing the action down. I think I would prefer having more flowers placed across the levels or more aggressive enemies/bosses in exchange for being able to water flowers faster, but if you're aiming for a more casual and slow-paced game, I can understand that too.
Overall, I'm looking forward to seeing where further development leads for this game! I think this demo could eventually turn into a really fun full release with some more content and depth!