I bought this Cattleya in Nov last year from Normans orchids. It bloomed great. i have it in a south facing window and it now has developed a leaf that is brownish/black and the end of one leaf is black. I use Msu fertilizer at 125 ppm and 1/4 tsp superthrive per gallon of water. I don't water it until all the media is dry. wha tdo I do now. i have posted 4 thumbnails of it in my library.
Thanks
Dennis 4246