From a couple of days ago, here is Hoya soligamiana just before the flowers close up:

Hoya deykeae has never been a spectacular grower for me until this summer.  It apparently loved the very shady humid conditions provided by my summer greenhouse.  Look at these spectacular leaves!

I love this plant!  Here is Hoya vitellinoides just before bringing it back in for the year:

Hoya amoena Java IML 1038 is a rampant grower!  I had to literally cut it out of its summer greenhouse; it had entwined almost every plant in the space.  Here are a couple of photos after I got it chopped out and all wrapped up:

Hoya platycaulis is a very unique plant that I wish was more readily available.  I have no experience growing it as of yet and will report back as the months go by as to whether I’m successful or not.

I’ve read that there are similarities between the flowers of these two species.  Here are some flower comparison photos:

From my books and the internet, the one universal truth about Hoya platycaulis seems to be that it is extremely difficult to propagate, and my one attempt at it seems to bear that out.

Hoya platycaulis got its name from Latin platys and caulis for “flat” and “stem,” respectively. The trait that all new stem growth is flat seems to be unique to this Hoya.  As the growth matures the flat stems will become rounder in time.

Hoya platycaulis is a native of the Philippines and was published by Simonsson & Rhodda in 2005.