CC>>        Xmas cactus need long nights (12-14 hrs) and/or cool temperatures
CC>> (below 50 degrees F) to bloom.
 DD> I have trouble making mine bloom, but a friend of mine has two beautiful 
ones that
 DD> sit in her window in direct sunlight.  Furthermore the temperature in 
her house is
 DD> a constant 70 degrees and those plant bloom at least twice a year....go 
figure..
Most bloom is day-length, temp., or a combination of these (and other 
factors) induced.  They (Schlumbergia) are listed as being day-length induced 
bloom... however,  when I was in the business of "forcing" them into bloom 
(for market) in the greenhouse, we gave them several days of 50-55'F nights, 
without adding anything else (like shortened days, as this is a pain in the 
neck).  This breaks their  day-length requirement, and they will go ahead and 
set bud.  (This is also true for the Thanksgiving, but the Easter requires 
40-45'F temp.)
cheers,
WL Sakowski
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