Really love this plant for keeping indoor air clean! It makes a noticeable difference, especially if you have MCAS. It has beautiful blooms and adorable pink and silver speckles on the leaves (more pink on young purple leaves, silver on mature green).
It is doing well as an indoor plant with strong southern light exposure at sliding glass door in zone 3-4 (only possible because my thermostat is set very high and keep the air quite humid). I mist occasionally and haven't given it especially attentive care, so it took 4 years to bloom. A trellis is a must for the vines and go with either plant-based cotton-type pots or unglazed terracotta. This baby needs to breathe!
Now that it is blooming, the room is quite full of the cotton/linen scented candle aroma. At first I thought a neighbor must have been burning that type of candle and it was somehow getting into my apartment. Nope! It's the beautiful purple blooms! Re-roots nicely from cuttings. Not as easy as those that root from water only, but still easy. I'd recommend this plant strong, but not if you dislike that particular scent or have severe MCAS. I've been eagerly searching for a particular scented Hoya species that grows profusely at a kibbutz in Israel (for just shy of 20yrs). The hunt continues. . .