Hoya collina gave me such a miserable time, that in my mind, I thought that I had owned it much longer than I actually had. I believed it to be 5 or 6 years when in reality it had only been a little over three when, in 2020, I added this plant to my Hoya Hall of Shame. This was a designation that I gave to a group of Hoyas that had resisted all of my efforts to flower after many years.