January 24, 2011
Light and temperature can sometimes cause a Christmas cactus to change color, though normally that is from a less dominate color, like white, to a more dominate color, like pink. It can also happen if you get a genetic mutation, also known as a sport but that would occur on only a single stem.
It sounds like yours, since it was blooming one color and is now blooming another, something has changed with the light and temperature and this is causing the flowers to change as well.
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