Osakazuki is a good solid older cultivar. These are not as persnickety as the newer cultivars.
A couple characteristics of this cultivar... likes a cool place and misting and does not like to have too much spring foliage removed as they are sensitive to this treatment.
btw: Osakasuki has a number of flower sports, so look out for different flower color and shapes in the future and be sure take cuttings from these once this guy is grown out. Once grown out, the cutting will yield a new cultivar for free. Sports to look out for are: Asahi no Kagami, Chinzan, Hanabi, Kazan 1, Osakazuli no Hikari, Otome no Taki, Shinisakazuki, and Temari.
cheers
DSD sends