Shirokaga

Prunus Mume
Japanese Apricot
Ume

Shirokaga
白加賀（しろかが）
'Shirokaga' is typically grown for fruit,  but will produce enjoyable flowers, and can also be used for bonsai.  Whereas 'Nanko' is famous in the Kansai region, 'Shirakaga' is famous in the Kanto region.  Shirokaga's fruit are juicy, and the cultivar is known to be particular resistant to disease in Japan

Primary uses
Umeboshi, umeshu, juice

Pollination
It produces very little pollen, and should be accompanied by the presence of another variety