Easter cactus dropping segments
My Easter cactus (Rhipsalidopsis gaertneri) purchased from a grocery store in 2005 (now about 18" long) is rapidly losing segments. Sometimes I'll come in the sunroom (where it's been living) and a 6-segment chunk will be on the floor with several other 1-2 chunk pieces around it. This has been going on now since summer started. Temps can range in the 70s in there. I water the same as I always have (1bout once a week).
Any ideas? Thanks.