Just found this. I have three pots of viridiflorus from three different sources, but none flowered last year. This year, when they were in full leaf I brought one pot into school where it sat and baked in a south facing window all summer. Last week, when school went back, I tipped them all out. The ones in school, having had no water since May, had well advanced shoots. The others, also with no water since May, but in the greenhouse plunge, are still dormant. I will let you know if any flower this year.