I'd clone out the bright white spots in the middle of the water...but you're asking for crop?
If you crop tight to the left stuff - then you're creating a nice picture of this flower that's been done before. If you leave this crop, you leave people wondering why you left SO much space in the middle - what if you compromised and moved the right side more onto the left and took out about 2/3 of the negative space in the middle in PS or PSP?
M