I grow this little beauty under fluorescent lights in my basement over winter. It appears a scape with blooms is getting ready to pop. Once in bloom, the bloom presentation is kind of lengthy (comparability to other bloomers in basement.) Once the bloom fade, I cut blooming stems off and let the leaves grow until plant starts to lose vigor. Gradually cease watering. At die-back I just place the pot in a dark spot in the basement and leave it dry till new growth noted (usually fall), then start anew. Sometimes the next season brings more blooms, sometimes not. If I find some pics of it in bloom, I'll post them, or post pics when it blooms this year.
(I use the same cultural techniques for this Ornithogalum as with Lachenalia).