I've got a "sanguino moro" (blood/red) orange, but it appears to be only half-bloody, as in the photo below. However all figures I've found on the internet show oranges that are purely red inside, for instance the ones on Wikipedia. Is this normal? Should I be worried about it? I'm mostly concerned whether it's a sign of the orange being "sick" or health-threatening in any sense.

a blood orange cut in half, showing variegated orange and red flesh

  • 7
    That's perfectly ok, Actually, many (most?) blood-oranges I had looked loke yours.
    – Stephie
    Mar 14, 2015 at 19:32
  • @Stephie Ok, thanks. I'm not sure what to do now. I didn't manage to find this on the internet so it may make sense if you made an answer. Should it be better to delete the question for being "too trivial", tell me and I'll do that :)
    – yo'
    Mar 14, 2015 at 19:37
  • 1
    There are no "too trivial" questions. And IMHO your question is quite interesting, so please don't delete. I didn't write a "proper" answer because I had no idea what to write beyond "that's ok" and no time for further research to back up my statement, which I like to do for solid answers.
    – Stephie
    Mar 15, 2015 at 6:52

2 Answers 2


While many pictures show them deep red (perhaps for the dramatic effect?), even orange flesh wih only some red tinge is normal.

Even the wikipedia link you gave in the question states:

The Moro is a "deep blood orange" meaning that the flesh ranges from orange-veined with ruby coloration, to vermilion, to vivid crimson, to nearly black.

The color of oranges is affected by temperature: Only if there is a certain temperature difference (cool nights vs warm days) the oranges develop the deeper hues. For blood oranges the crimson flesh and reddish tinges in the skin, "normal" oranges get their typical orange skin instead of greenish or yellow.

Fun fact: Even greenish oranges may be ripe, but just didn't get the cool nights. For the sake of the consumers who percieve orange = ripe, green = unripe, the skin of oranges and other citrus fruit can be "de-greened" by the "ripening gas" Ethylene (if permitted).

Below a range of color variations from mostly orange to deep red:

Mostly orange

Orange rims

dark red

  • 1
    Ohh, I've never seen citrus that purple!
    – Jolenealaska
    Apr 19, 2015 at 2:54

I just happen to cut into this literally Half Bloody Blood orange! Tasted great and so pretty! Half blood orange

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