It's very simple, but strangely addicting. The music makes it relaxing too.
I like the fact the the drops took some time before speeding up, it allowed me to react more easily. I love the thrill of the flower spawning in the upper side of the screen, near the drop's position, it made me more cautious and stressed for these flowers.
I would have love to see some difficulty increase over time, I went up to 105 and then stopped.
Well done!