Orange tree – sour fruit – need help

Question

I have this Orange tree in my backyard (pictures below). It doesn’t produce a lot of fruit and they’re quite sour when they do come up. Can it be fixed? What kind of Orange is it? I see a kind of a navel mark at the bottom that’s on Navel Oranges, but these oranges are too sour to be Navel (or the tree needs help). What do I need to do?

TIA,
Norm

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Answer 1

The tree and fruit look okay in the photos. Often the problem with sour fruit lies in the variety that you are growing. Other factors involve a warm season that is too short, inadequate direct sunlight, and inadequate fertilizer uptake of the tree. GardeningKnowHow has a few tips for you to follow here: https://www.gardeningknowhow.com/edible/fruits/oranges/oranges-taste-sour.htm