This is the first to flower from this TON flask I got in 2016. Okay for a first flowering at 27cm NS and 6cm DS. There are another 6 in spike (out of season).
I think they are just very vigorous. I keep them at a minimum of 18oC and use k-lite at around 20ppm N at every watering. I think they like to be kept moist but not soaked.