There are so many Hoyas that fall into this group of easier to flower than to put on new growth. Just a few that come to the top of my head would be: Hoya undulata, Hoya buntokensis, Hoya megalaster, Hoya inflata, Hoya calycina ‘Stargazer’, and Hoya amicabilis. There are many more, but that is all that I can think of right now. Here is Hoya amicabilis from this morning helping to prove my point.