Here is the full list of all 12 Spring Falls achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Reach the end
Complete all levels
Complete levels 56 - 59
Complete levels 36 - 55
Grow three flowers in one move
Complete levels 27 - 35
Complete levels 22 - 26
Make a move with no effect
Complete levels 13 - 21
Make a flower bloom more than once
Complete levels 1 - 12
Grow your first flower