In my experience and conditions, Phal lueddemanniana is an easy, forgiving and adaptable species. It is perfectly happy in my intermediate-warm conditions (mid-high 60s in the winter, mid-high 70s and higher in the summer), and does not mind ambient humidity (for me that's 30-60% range).
As with Mr.Fakename, I also grow it in rather bright indirect light.
Some observations about blooming (at least for my plant!):
- I've had spikes form in the fall and in the spring.
- New spikes often don't bloom right away once they've finished developing, they will 'stall' and then bloom the following blooming season (spring).
- A spike will remain viable for several years. Every year it wakes up and puts out some new buds.
My plant is also is a prolific keiki machine, after blooming all the older spikes produce keikis. However, I think this may be an effect of the form of the species that I have. The petals are narrower than what is typically seen, I've added a photo of my plant:
At the back of the photo you can see a new spike that grew last winter/spring, it will likely flower next year. The spike in the forground has been blooming every season for at least 3-4 years.