I grow this guy in a pot using sphagnum moss as its medium, this keeps the roots moist almost all the time. He grows in a section of the glass house that is not heated and gets down to about 4 or 5 degrees Celsius during the middle of winter. As far as light is concerned I have the house covered in 50% shade cloth, in the here he gets strong but not direct light.
Regards Craig
PS Tin the bulbs get to about 2 inches tall with 2 leafs atop of this about 3 to 4 inches long it has quite a long rhizome between the bulbs individual flowers are about 1/4 inch tall and the spikes to about 4 to 5 inches.