One good place to begin a search for information such as this is the AGRICultural OnLine Access, commonly known as AGRICOLA: http://agricola.nal.usda.gov/booleancube/… Searching for "flower and Ornithogalum and dubium" or "flowering and Ornithogalum and dubium" or "inflorescence and Ornithogalum and dubium" yields a few interesting results. Of course, searching for "bloom and Ornithogalum and dubium" or "blooming and Ornithogalum and dubium" yields no results since these two searches mean something completely different. Warm temperatures at the correct time seem to be the key. I grew a pot of the orange one for a number of years as a house plant in a warm window and they flowered every year, but slowly declined which I attributed to insufficient light. Nathan