This was fun, I love the idea of you having to manage each plant individually and utilizing the limitation as a storm-timer is clever.
The music is soothing and nice and I liked that the growth is based on the water it collects instead of simply a timer.
I did however, find two annoying bugs:
1. If you have exactly 4 money, you can't buy the pepper (all other plants work as expected, though.
2. If you finish the game, go back to the main menu and start a new game, the rain will never come (restarting the game will fix this, so luckily it's not permanent).
All in all, I had a great time. It's exactly the kind of game you can turn on when you've had a bad day or need a few minutes of breathing room.