I received Hoya bicolor from a very nice woman named Hannah from Hawaii mid-summer last year (2021). It was a rooted cutting in potting soil when I received it so I kept it that way. It put on exceptional growth and needed to be up-potted several times over the next few months. Below the foliage of Hoya bicolor.

I think that I have taken a photo of these together before, but I like it so much here is another one:

The little flowers of both species are about the same size, so as long as they are both blooming at the same time here are their couples portraits:

Here is a look at the fully opened flowers of this strange little Hoya. I would love to know what kind of insect would be adapt at pollinating these blooms!

Below you see the very tiny beginnings buds forming on Hoya desvoeuxensis, which despite at least 2 dozen peduncles over the years, none have ever tried to bud up. So very far to go, but these are definite buds that are starting to grow. They are only about 1/16″ in size right now.

If I can ever figure out how to grow Hoya hamiltoniorum, I would love to bring it back. It has a unique flower, and some day I would love to flower a peduncle full of blooms. At this point I am happy to at least say that I was able to bloom it. This is not a plant for beginners, and gets my recommendation for serious collectors only.

My photo processing software comes with a antique paper effect that I think looks kind of cool showcasing my single flower.

Of all of the Hoya flowers that I have seen, none has the strangely shaped corona of Hoya hamiltoniorum. Technically it has bifid inner lobes according to plant scientists.

Hoya hamiltoniorum is named for John and Gina Hamilton residents of Sabah and avid growers of Borneo Hoya species.

The flowers of Hoya hamiltoniorum are about 1/2 inch in diameter and are supposed to be strongly fragrant at night. I discovered my single bloom in the morning and could detect no scent.