Mandarin oranges?

[Ccat]

We have 4 tangerine trees...zone 12...

 
zone 12 is really warm for a mandarin orange (satsuma).  I am glad you are finally getting fruit!  Citrus is known to be slow.

I wonder how grapefruit would do?  they must have high heat to get sweet, but I wonder if the total heat units in your zone 12 would work? 

thanks for the reply.