I have had this potato vine in my house for around 4 years, and I have no knowledge of what to do for it.It will completly defoliate, and be bare, then it will put out leaves, and just when you think its on its way, it will repeate this process.
It did out grow the pot, that I started it in, and I re potted it in a much larger pot. I have this vine in a deep plant window, and it gets sun, (Morning), but not direct.
I am open to sugestions. I will try for some instructions on this fella, but as of yet I have little instructions. It says it has a lavender flower, and a yellow fruit. So far I have seen neither. Thank you Mike
Do you keep it indoors year round, or does it go outside in the warmer months? If it's indoors all year that may be the problem, I'd try putting it outside during the warm months and just bring it in for the winter. Indoors it can be hard to get enough light for many types of plants to bloom. The fact that it's defoliating also suggests it's not completely happy with the conditions you're keeping it in so you might check on watering, etc as well.