Somewhere in the 55°-60° range is my preference.

One thing to keep in mind is that while most phals grow better if kept
really warm (80's, low 90's with lots of shade and humidity), some phals
need a couple weeks of cooler temperatures (about 15° lower, on average)
in order to initiate flower spikes.

Most of the time (depending upon where you live), the cold from the
window will provide that around this time of year, and you'll see
blossoms about February - just when you need them to get over the winter
doldrums.

Ray Barkalow - First Rays LLC - www.firstrays.com
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