Really cool take on the theme. An impressive puzzles with a good selection of mechanics.
The water simulation aspect must have been hard to code in the jam. I found the puzzles where you have to redirect the water really fun.
My only criticism is that the orb dropping and getting lost if I make a mistake. Would appreciate an easier way to stop growing the plant. It's too easy to twist the plant unintentionally while trying to tuck the orb away. For example, you could make grabbing the orb permanent but the orbs ability only activates when LMB/RMB is pressed. This'd work for multiple orbs too.
The pixel art is really good. The tree looks really pretty when it gets big.
Overall this is a great entry!