Citrus Grafting And Rootstock Questions

[1rainman]

A hybrid of sour orange would be cool. They are beautiful trees and nothing wrong with the fruit other than sour. More or less like an orange flavored lemon.

[pagnr]

A hybrid of sour orange would be cool. They are beautiful trees and nothing wrong with the fruit other than sour. More or less like an orange flavored lemon.

Here is the UC Riverside collection of the Citrus aurantium Sour Orange and hybrids.
A fair number of Japanese Citrus varieties are Sour Orange ( aurantium ) hybrids.
https://citrusvariety.ucr.edu/citrus-varieties/category-or-type/sour-oranges