Pancrazio, the Xie Shan satsuma, pronounced She Shan, is a very early maturing satsuma, often mature in September or early October.
Citrus trees, mandarins and satsuma's included, really do not produce quality tasting fruit until at least the 5th year of age, and almost never on young/small trees either in containers or trees planted in the ground. Dr. Malcolm Manners, a professor in the citrus department of Southern Florida University, once told me that the very best citrus fruit he as ever eaten was picked off of a 25 year old tree. So even is you are fortunate to get a Xie San tree don't judge it by it first few crops. Citrus macrophylla normally is given the rating number "5" for fruit quality grown on its rootstock. The number "5" is the worst number rating on the rootstock scale. However, for tree vigor macrophylla gets a "1" which is of course the highest rating. Therefore, I personally believe the only reason a person would use macrophylla would be for its ability to offer a scion high vigor. But a high vigor rootstock would not be my choice for a container grown tree. - Millet
