thanks! I have mine mounted on cork, and it gets a lot of sun, too. Indeed the growths of last year were getting very strong, so maybe this time they will produce sheaths ! JeanJean, two things. They generally need to get big before blooming and often its the action of growing out of the pot that stimulates blooming. Basket culture also works well. Secondly, very bright light. I grow mine in full sun all winter and about 50% sun during summer heat here in Tennessee. I suppose I would get more flowers if I grew it brighter still. I'm a little chicken of burning it though.