I received this plant as a mature division about five years ago, and it has grown every year for me, but never gets any taller. The tallest growth, with leaf extended is ~4.5" tall. Five years and still the same. Healthy plant overall, but I hear that others have plants up to 18" tall?? 20 older now-leafless pbs, and 9 younger ones with leaves. It's in a 3" clay pot in fine bark, and seems to be healthy. I so want to see those beautiful red/pink flowers. What's going on?