Beautiful catching the movement of the trunk. But for suiting the title, maybe you can crop the lower part for 1/3 so that you can still keep your main 2 grapefruits and still have that nice curve of the branch. (You will get a king of panoramic picture though.) And I don't know if you can saturate the yellow. : ) (I don't know why I can always see the solution for others than for myself.)
Oh, wow! Those things really grow on trees? Just kidding. But it is a bit unusual. I think it might be a tad oversharpened. Otherwise, it makes a nice photo and certainly meets the challenge.
Nice use of the tree trunk - draws me in. well done. Some refinement in PS and you've got a very high scoring entry..more saturation, some USM maybe. Lack just a bit of punch and pop.