In a message dated 10/14/2007 3:02:21 A.M. Pacific Daylight Time, Nancy writes:
"but I still have something that appears to be lichen creeping over a lot of the wood. Any suggestions on an attack for this? I can scrape off the ruffled edges, but the flat parts are just too smooth, and I'd like to kill off whatever spores are causing this growth. Not unattractive, but still... Regards - Nancy" Nancy: I grow my plants outdoors in coastal California (and this may not translate to the deep South), and have had lichen growing on a number of the Orchids and Bromeliads I keep mounted on Cork. Over the years I have found that the conditions favoring lichen growth also seem to favor the Orchids and Bromeliads. There seems to be no conflict between the two as there would be with algae, fungus, some mosses, and liverworts. If what you have is liverworts (they look sort of like lichen, but are darker green and slimy), than excessive humidity and moisture is certainly a problem. Other than drying things out more and reducing fertilizer application I am not sure how you would control them. There are chemicals, but they do not seem to be indicated for use on orchids. Dennis ************************************** See what's new at http://www.aol.com _______________________________________________ the OrchidGuide Digest (OGD) orchids@orchidguide.com http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
