I have never had a lot of luck growing Hoya mindorensis, part of the parentage of Hoya MB 1594 C, but this is another example of a hybrid being easier to grow than its parent. I currently have this Hoya just growing in ambient conditions sitting on a windowsill. It has even flowered there. Hoya mindorensis never would have stayed alive there, let alone be able to flower. This is a hybrid that gets my highest recommendation!