My plant took off when I put it in a 10 gal black plastic nursery pot that I brought home hostas in, it liked the tall narrow pot and it's roots filled to the bottom in one year. I did not fill the pot with mix but layered it onto the level of the new roots over a period of several years. It only took 3 years for the root level to be at the rim then it started to branch. I had 17 blooms last year.grow in full morning sun, warm wet in spring and summer and down to around 40 degrees in late fall for buds to iniate. These grow on the ground in debris so I used large bark, sponge rock. It looked like yours when I started this and had never bloomed in the prior 7yrs, I now think it needs to be about 1-2ft tall to start blooming, and hates to be repotted, so whatever don't repot again for a long time. I can't find a picture and it was stolen from my porch. It's one I will never forget.
