Originally Posted by harveyc
I do wish the Four Winds would indicate what rootstock is used. I'm not sure if they use mostly Flying Dragon or not, but they do specialize in dwarf citrus.
I e-mailed them a rootstock question today for etrog since there are some limitations on it being grafted for kosher requirements. A Jewish friend was suggesting I try to explore this market.
Personally, I wouldn't want Etrog on a dwarfing rootstock -- especially in a cooler winter climate. I would be satisfied with Etrog on a seedling of itself or a Citron-cultivar rootstock. If you want to save some shipping charges, I can check with the sources here and bring you one later this spring when I travel to Davis.