Cool game! I made it to level 8 before failing. The animation and sound effects while shooting the hose feel really juicy and make watering the plants satisfying. I wish I had had more time to develop such flourishes in my own game. The shrink attachment was also a nice addition that added another layer to the gameplay.
One thing to note is every time it came down to the very last plant, I would just mash the W button until I beat the level. It definitely felt like I was cheesing the game, but at the same time it was pretty fun to get down to the last plant and mash the water with 5 seconds left. So up to you whether you want to balance that out or leave it in!