Happy New Year - a bit late.
I have two schlumbergeras one about a year old and a new one. The older was doing well during winter 17/18 until I left it behind the curtains overnight and its buds just fell away without remorse. This winter I have been careful (I thought) and have had three lovely blooms and lots of buds but again the majority dropped before coming into flower. It lives on a coffee table in a south facing living room and is watered every 7-10 days by plunging into cold tap water for 30 minutes and then allowing to drain. Generally the temperature does not fall blow 15 degrees overnight although it will get down to say 10 degrees if we are away without the heating on.
The newer one came with lots of buds and gave half a dozen blooms but then its buds started to fall as well. Lives in the same place. It does give the impression of being overwatered by soil touch.
Any suggestions about what I am doing wrong?
Thanks in advance