I can tell a lot of work has gone into this game. It is really good, and you can feel when you've screwed up. I really like it's art and it's feel.
Minor defects:
Tiles are repetitive
Many times when I had achieved 15/15 flowers, I didn't complete the level(weird bug?), maybe use >=.
The "Start" button also does not matter, I don't think there's need for a start button.
But overall. This is such a cool game with interesting gameplay!