Dear Mary and Paul, I have the 3 types of O. dubium and the cultivation I use for these bulbs is as follows. Plants the seeds into pure sand in 8 inch pots. I use white bricklayers sand for this bulb, it's less fatty than the red. Leave the pots in full sun, full frost, full winter rain and do not water during the summer (although, they do receive rain periodically). These flower each year, produce seeds and then go dormant until next season. I have not had any problems with cultivation of this little treasure using this method. Best wishes, Dash.