I think it's somthing to do with getting the day-length right. IIRC it needs
12 hours sun and 12 hours dark to turn red again. Unfortunately that's a
bit difficult to provide at this time of year.

Martin

"Marcus Fox" wrote in
message ...
My poinsettia has lost it's red pigmentation, and is now all green. Any
way
to get it back to red again?

Marcus