I like it, good job :) Sometimes it looks like my water doubles with one click, but I've seen this 3 times maybe.
I made it to the 20th day and assumed that nothing would happen later - is that true?
Good job getting to day 20! Yeah nothing happens after you get the flower. The water button actually dispenses more water depending on how long you hold the button down for, but this isn't that clear. Its supposed to add an element of skill.
Oh, I didn't know that. It's worth to mention it in the game page description. I thought it was a bug.