It’s That Time of Year Again – Hoya obovata time! Three years in a row H. obovata began blooming at this time and continued for months. This is one of my 10 must have Hoyas, and it is for good reason. This plant is no namby-pamby Hoya that needs special around-the-clock care. It grows and blooms where it is as dry as the Sahara with no added humidity.