Cara cara is not to my knowledge a blood orange. My inground cara cara in Beaumont texas never had the orange flesh in the fruit. In September before any cold weather the flesh was red. The color is the main reason I grew cara cara. Standard navel oranges never get a very good color in SE Texas, even with cold weather. I suspect your cara cara was mislabeled and is some common unknown strain of navel orange.

Phil,
my Navels are perfectly (grocery store) orange for last few weeks and taste great. The only cara-cara fruit we had this year was light orange outside and deep pink inside. We ate it a few days ago and it was absolutely great.
Btw, referring to another tread, we tasted the only Hirado Buntan fruit that we had this year - by far the best pummelo I ever tasted! Definitely worth growing.

Hi,
My Kishu is seedless but it grows crazily and is more upright! It is on sour orange, which, most likely, contributes to its growing rate, but it grows even faster than Navel on the same roots. Last year (first) crop was rather bland though...