I have one too, purchased in 2009, grown from a small plant to a large one, two feet wide, two feet tall but as of yet no flower. I keep it out in morning sun, bright indirect light afternoons on the patio 8 months of the year, feed regularly. It looks happy, robust, but I sure wish I couild coax it to flower. But perhaps it needs to be HUGE before it blooms?
Yes. Rnps. Lena Rowold is a parent of this cross which need to get to a large size in most crosses before it flowers. As you may know Lena Rowold is a huge plant, and gets to gargantuan sizes.