One of my two 8 year clementine trees gives a good set of nice fruits this year. The other tree had flowers but no fruits.
Some years they had flowers but beard nothing or not even had flowers.
One year both had fruits with the seeds like pumelo seeds (both shape and size)
Whenever it get cross pollinated with other citrus, the fruits has the flavor of that citrus
One year they had seedless fruits but the ring is bumpy
This years fruits:
The fruits are similar size as or slight smaller than satsuma and slightly sweeter than satsuma. 0 seeds were found in about 10 fruits tried.
It also has a richer taste/flavor than Satsuma which most people would like, not zing or tangy.
They have a thin and tight smooth ring but still easy to peel。
Overall: They can produce nice fruits but it is a tree very hard to manage.