I fluked a cutting once and once only, but I'm led to believe they are propagated by cutting, probably under heat and mist and the cutting would have to be just at the right maturity. My mail order nursery has no problems propagating them, but I don't know how. The two white seedlings I have (9ft tall) are two years old from seed and no sign of flowers. I ordered them from Hawaii I think, not 100% sure. We are entering spring here and I'm hoping like mad it'll flower and fruit this year. Someone on here said the white are more cold tolerant than the red variety, I have no personal experience with that just yet.