Southern Frost navel orange

[hardyvermont]

Does anyone know more about this plant's background? 
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/

[Ilya11]

Does anyone know more about this plant's background? 
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/

What  do you think of their other Frosts? Do you have them?

[hardyvermont]

Does anyone know more about this plant's background? 
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/

What  do you think of their other Frosts? Do you have them?

I have them but not growing in the best of conditions so no fruit last year.  The grapefruit is delicious.  The lemon tastes like a lemon.  The satsuma was good.   

[Ilya11]

Thank you. Are they completely seedless?

[hardyvermont]

Thank you. Are they completely seedless?

I think they have a few seeds, but could be mistaken.

[manfromyard]

Does anyone know more about this plant's background? 
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/

UGA is very cagey about the plant. They have patents for the lemon and tangerine, but none for the grapefruit or orange.
That seems to imply that for both of them, they may be an out of patent variety that they just registered the name for..

Maybe a Hamlin, Fukumoto or Navelina since it ripens before December.