Pictured is my Nong Nooch vine. It is about 6' tall and in a 10 g pot and has not flowered. I have seen much smaller ones in hanging pots that bloom profusely. Any idea on why it will not flower? Do they need to be pot bound?
Should also add...other things to look at would be sun & fertilizing habits. If yours isn't getting the proper amount of light it might not flower, and too much fertilizer (especially nitrogen) can stimulate lots of green growth at the expense of flowers.
Send it to me, Popper! Mine died a couple of years ago and I haven't found another affordable one. I'm not sure why yours doesn't bloom - mine was much smaller and bloomed well - kept it in the greenhouse most of the year.
The pot size might be a clue there...I've found they like to be a bit pot bound. Needs very bright light to a few hours of early am direct sun, with some filtered shade in the afternoon in the summer. Mine blooms mostly in summer, once temps drop down in fall and winter it sorta just sits there. Ecrane is right about the fertilizer also, use a bloom booster in spring early summer or you'll get all growth and little to no bloom.
Water profusely-one of mine gets morning sun and the other afternoon sun. They are hanging in ""courtyard"" at the back door, surrounded by concrete--outside and house garage and concrete drive. Have started watering heavily every other day--will do every day in high summer-- and they look great!