The only problem I had with the cultivation of Hoya sp. aff. vitiensis NS05-021 is that there was a tendency for some of the leaves to get a bit chlorotic, whether that has to do with coconut husk as the substrate, I am unsure. It was not however an impediment to blooming it. The most amazing thing about the flowers are how long lasting they are. Here is a photo of the bloom on day sixteen, it finally began to close up on the seventeenth day after opening!! One of the longest lasting flowers that I have ever had on a Hoya.