Last year I was given a copious portion of seeds and I think every last million of them germinated. Consequently, this species became n intergral part of my "newbie packages", such that I have a reasonable amount left. They also got separated into two different containers and differing conditions.
A small group ended up sharing residence with U. calcyfida and spent the last 6 months in a closet, "room temp", under artificial lighting, with ~15 hours of light per day.
A larger quantity got their own pot and spent the past 6 months at a window sill, get decreasing photoperiod and temps for the winter, followed by the warmer temps and increasing photoperiod of spring.
In the closet batch, the plants are larger and nobody is inclined to flower so far. In the window sill batch, the plants are significantly smaller (overcrowded?) but one is sending up a scape.
I can't tell if flowering plant is due to seasonal fluctuation, )while the other is not) or coincidence. In other words, is it just correlation or is there causality?