Hello Ian,
saw this incredible 7 cm pot of the Narcissus 'Craigton Clumper' I have ask myself the following question.
1, Is this pot in the house in the sand plunge with the floor heating?
I have a unheated glasshouse, and my problem are the wintergrowing bulbs showing their leaves in November/December.
I lost most of them in the last years, because I can not water them at the right time, because of the frozen ground. Last year I start watering a month later than the last years (mid October). Is it better to grow these type of bulbs in a heated house? In this winter we had have minus 12 degree.