Tropicals & Tender Perennials: christmas cactus, 1 by orchidman1

orchidman1 wrote:
This year I have been amazed at how late my Thanksgiving and Christmas Cacti have come into bloom. Most have bloomed in January and some still are in bud. I'm wondering if the humidity in the Greenhouse is just too high. It runs around 73% all winter long. My GH has gravel floors and I think this allows for higher humidity. The Epies seem to love it but my Schlumbergera maybe not so much. I'm working on this.

I have also noted that some of my Holiday Cacti have gotten round rotting spots on some stems. First you see a brown spot which develops into an eroded area on the leaf. Any suggestions on what this is and how to treat it?. bob