The Summer of 2018 was one of the hottest here on record. Hoya serpens which had flowered regularly in the summer for years refused to flower. My poor Hoya thailandica was close to dead or so I thought, but rather than throw it out, I hung it in my shadiest tent greenhouse under a big maple tree. It kept the squirrels from doing any more damage and slowly it began to recover putting on more new growth and many more peduncles.
At summer’s end, I decided to put the plant back into a basement grow tent since it did so poorly in the regular house. It grew well, but I had little hope that it would ever produce buds. Tomorrow – It flowers!