>>> Few to none ask about rootstock when I sell trees.
That is sad Mr. Texas. Are they at least labeled "semi" or "standard"?
Nursery folks are always shocked that I am even aware of a rootstock name; if they keep chatting they soon realize I know more about their own stock of trees than they do. So many nurseries in central CA are clones of each other. Same exact stock from the same growers. What I hear various nursery staff spewing to everyone is identical, even if it's incorrect about certain varieties.
/End Rant
Correct me if I'm wrong, but pretty much any citrus variety that is grafted on Carrizo (assuming compatibility) will be med-large to large size (for a citrus tree, that is).
Therefore even slower growing, compact sized mandarins in zone 9+ under appropriate conditions, will eventually be over 14' feet tall -- such as Pixies, Kishu, and Satsumas? Wowever, whether they are upright (compact) or spreading (round/oval) is always dependent on the variety.
That sound right?