The curse was broken and I was finally able to flower Hoya darwinii. It took a lot of perseverance, and a willingness to try new things to pull it off. I really think that it was worth the effort. It turns out that both of my color variations bloomed pink when one was supposed to be cream color, but I care not. The flowers have only the faintest of fragrance only on the day they open, and last about 3-4 days before closing and falling off. Below the closed up blooms of Hoya darwinii: