Quote:
Originally Posted by SJF
Hi,
Thanks. I grow in my home. I tried a few Catts outside this Summer as an experiment. I will have to see how it works out. I lost a lot of my orchids in a recent rot episode when my central air broke and we had a bad heat spell with soupy humidity. This one was in part of the house that wasn't as affected...thankfully
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Cattleyas are much less likely to suffer from rot if they're given more calcium. Clacium helps the plant to build strong cell walls that resist fungus and insects. During the growing season use a fertilizer that contains calcium, like one of the cal/mag fertilizers, or use a cal/mag supplement a couple times a month. I use a Supplement called MagiCal (a hydroponics product) at 1 teaspoon per gallon, twice a month during the spring and summer growing season.